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Home / DTC / P1132 — Fuel rail pressure fault | Catalyst temperature sensor fault

P1132 — Fuel rail pressure fault | Catalyst temperature sensor fault

Detailed page for trouble code P1132.

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P1132

ALFA ROMEO P — Powertrain

Fuel rail pressure fault | Catalyst temperature sensor fault

Brand: ALFA ROMEO
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

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89

Browse 89 ALFA ROMEO manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

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Code

P1132

BMW P — Powertrain

O2 Sensor Heater Control Circuit Bank 1 Sensor 1

Brand: BMW
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

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Repair manuals

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Code

P1132

BUICK P — Powertrain

H02S Circuit Low Variance Bank 2 Sensor 1

Brand: BUICK
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

P0087 P0190 P0191 P0192 P0193 P0299
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+100 karma for a short comment :)
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Code

P1132

CADILLAC P — Powertrain

H02S Circuit Low Variance Bank 2 Sensor 1

Brand: CADILLAC
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

P0087 P0190 P0191 P0192 P0193 P0299
206

Browse 206 CADILLAC manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

CADILLAC

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Code

P1132

CHEVROLET P — Powertrain

H02S Circuit Low Variance Bank 2 Sensor 1

Brand: CHEVROLET
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

P0087 P0190 P0191 P0192 P0193 P0299
456

Browse 456 CHEVROLET manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

CHEVROLET

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Code

P1132

CHRYSLER P — Powertrain

H02S Circuit Low Variance Bank 2 Sensor 1

Brand: CHRYSLER
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

P0087 P0190 P0191 P0192 P0193 P0299
193

Browse 193 CHRYSLER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

CHRYSLER

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Code

P1132

DAEWOO P — Powertrain

LIQUID FUEL SOL. FAULT

Brand: DAEWOO
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

P0087 P0190 P0191 P0192 P0193 P0299
Repair manuals

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Code

P1132

DAIHATSU P — Powertrain

Air flow abnormal when emergency home active

Brand: DAIHATSU
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

P0087 P0190 P0191 P0192 P0193 P0299
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Code

P1132

FIAT P — Powertrain

Fuel rail pressure fault | Catalyst temperature sensor fault

Brand: FIAT
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

P0087 P0190 P0191 P0192 P0193 P0299
Repair manuals

Manual library for FIAT

26

Browse 26 FIAT manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

FIAT

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Code

P1132

FORD P — Powertrain

Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 1

Brand: FORD
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

P0087 P0190 P0191 P0192 P0193 P0299
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+100 karma for a short comment :)
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Send to email
Code

P1132

GM P — Powertrain

H02S Circuit Low Variance Bank 2 Sensor 1

Brand: GM
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

P0087 P0190 P0191 P0192 P0193 P0299
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

P1132

GMC P — Powertrain

H02S Circuit Low Variance Bank 2 Sensor 1

Brand: GMC
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

P0087 P0190 P0191 P0192 P0193 P0299
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

P1132

HUMMER P — Powertrain

Heated Oxygen Sensor (HO2S) Circuit Low Variance Bank 2 Sensor 1

Brand: HUMMER
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

P0087 P0190 P0191 P0192 P0193 P0299
Repair manuals

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Code

P1132

LAND ROVER P — Powertrain

Lack of the H02S-11 switch, sensor indicates rich

Brand: LAND ROVER
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

P0087 P0190 P0191 P0192 P0193 P0299
294

Browse 294 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

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Code

P1132

LINCOLN P — Powertrain

Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 1

Brand: LINCOLN
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

P0087 P0190 P0191 P0192 P0193 P0299
166

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Code

P1132

MAZDA P — Powertrain

HO2S Bank 1 Sensor 1 Signal Above 0.45v AF Ratio Too Rich

Brand: MAZDA
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

P0087 P0190 P0191 P0192 P0193 P0299
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Code

P1132

MERCURY P — Powertrain

Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 1

Brand: MERCURY
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

P0087 P0190 P0191 P0192 P0193 P0299
296

Browse 296 MERCURY manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

MERCURY

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Code

P1132

OLDSMOBILE P — Powertrain

HO2S Circuit Low Variance Bank 2 Sensor 1

Brand: OLDSMOBILE
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

P0087 P0190 P0191 P0192 P0193 P0299
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

P1132

Other P — Powertrain

Lack Of HO2S Switch - Sensor Indicates Rich

Brand: Other
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

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Code

P1132

RAM P — Powertrain

Fuel Pressure Regulator Offset Rationality

Brand: RAM
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

P0087 P0190 P0191 P0192 P0193 P0299
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Code

P1132

SAAB P — Powertrain

O2S. Switch point - rich. Senson 1

Brand: SAAB
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

P0087 P0190 P0191 P0192 P0193 P0299
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

P1132

SATURN P — Powertrain

H02S Circuit Low Variance Bank 2 Sensor 1

Brand: SATURN
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

P0087 P0190 P0191 P0192 P0193 P0299
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

P1132

VOLKSWAGEN P — Powertrain

Oxygen Sensor Heating Circuit Bank 1 + 2 Sensor 1 Short To B+

Brand: VOLKSWAGEN
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel rail pressure sensor internal failure or damaged connector/wiring
  • High‑pressure fuel pump failure, leaking pressure relief/bleed valve or blocked fuel return
  • Low fuel supply (weak lift pump, clogged filter, collapsed inlet line)
  • Fuel rail or injector leaks, rail pressure regulator malfunction
  • Catalyst temperature sensor (thermocouple/NTC) failure, open/short or connector issue
  • Exhaust leaks or damaged/contaminated catalytic converter affecting temperature readings

Symptoms

  • Check Engine Light (MIL) illuminated, possible illuminated traction or limp mode
  • Engine misfire or rough idle, hesitation under load
  • Loss of power, reduced acceleration or limp‑in mode
  • Poor fuel economy or hard starting
  • Possible increased exhaust temperature or rotten‑egg/sulfur smell if catalyst damaged
  • Intermittent faults that may clear and return

What to check

  • Read all active/pending freeze frame data and related codes with a capable scan tool
  • Inspect wiring and connectors for the fuel rail pressure sensor and catalyst temp sensor (heat damage, corrosion, pin-back)
  • Verify ECM power, ground and communication lines
  • Monitor live data: fuel rail pressure (PID), commanded rail pressure, injector pulse, fuel pump command
  • Check for fuel supply issues: fuel pressure at low‑pressure side, fuel filter condition and pump operation
  • Perform a visual inspection of the catalytic converter and exhaust for damage or leaks

Signal parameters

  • Fuel rail pressure sensor: typical output voltage ~0.5–4.5 V proportional to pressure (varies by sensor). Compare to scanner pressure reading and spec.
  • Rail pressure at idle/crank/under load: varies by engine type (use factory spec). Low/high deviation relative to commanded pressure triggers faults.
  • Catalyst temperature sensor (NTC or thermocouple): voltage or resistance will change with temperature; heater circuit (if present) 0–12 V when powered by ECM.
  • Continuity: sensor ground should be
  • Look for jitter/voltage spikes or open circuits in live data that don't match expected smooth temperature/pressure curves.

Diagnostic algorithm

  1. Capture freeze frame and all related/associated DTCs. Note conditions when code set (engine load, RPM, coolant temp, ambient temp).
  2. Visually inspect connectors and wiring for both the fuel rail pressure sensor and catalyst temperature sensor. Repair any damaged wiring, pins, or connectors.
  3. Backprobe sensor signals with a scan tool while cranking and running. Confirm sensor voltage/pressure readings change logically with engine speed and commanded pressure.
  4. If fuel rail pressure PID is low/erratic: measure actual fuel rail pressure with a calibrated mechanical/electronic gauge or adapter. Compare to commanded values and factory specifications.
  5. Test fuel supply: check low‑pressure feed (lift pump), fuel filter, and return line for restrictions. Verify high‑pressure pump operation and relieve/bleed procedures per factory service information.
  6. If rail pressure hardware checks OK, test rail pressure sensor resistance/voltage at the sensor and at the ECM connector to verify no open circuit or short. Wiggle test harness to reproduce fault.
  7. For catalyst temp fault: remove connector and measure sensor resistance or thermocouple output at known temperatures (cold vs warmed exhaust) or compare live temp PIDs before and after warm‑up. Check heater circuit supply and switching (if present).
  8. Inspect exhaust/collector/catalyst for evidence of overheating, damage, or internal collapse. Check for excessive backpressure that may affect temperature readings.
  9. Clear codes and perform road test while monitoring live data. If intermittent, try to reproduce conditions noted in freeze frame.
  10. If a sensor is proven faulty by bench/vehicle tests, replace with OEM or approved equivalent and retest. If wiring and sensors are good, investigate ECM faults or software updates with manufacturer resources.

Likely causes

  • Damaged/dirty/loose connector at fuel rail pressure sensor or catalyst temp sensor
  • Failed fuel pressure regulator or high‑pressure pump causing incorrect rail pressure
  • Open or shorted sensor wiring to ECM (common on heat‑exposed harnesses near exhaust)
  • Defective catalyst temperature sensor or its heater circuit (if equipped)
  • Clogged fuel filter or weak low‑pressure fuel pump reducing supply to high‑pressure pump

Fault status

⚠️ Status
P1132 — Fuel rail pressure / catalyst temperature sensor fault. The ECM detected an abnormal sensor signal for the fuel rail pressure and/or catalyst temperature sensor (open, short, out‑of‑range, or inconsistent with commanded values). Inspect wiring, sensors and fuel/exhaust systems; further testing required to isolate cause.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 2.0 - 4.5 hours

Similar codes

P0087 P0190 P0191 P0192 P0193 P0299
626

Browse 626 VOLKSWAGEN manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

VOLKSWAGEN

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+100 karma for a short comment :)
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