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Home / DTC / P0192 — Fuel Rail Pressure Sensor Circuit Low Bank 1

P0192 — Fuel Rail Pressure Sensor Circuit Low Bank 1

Detailed page for trouble code P0192.

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Code

P0192

Generic P — Powertrain

Fuel Rail Pressure Sensor Circuit Low Bank 1

Brand: Generic
Type: P — Powertrain
Views: UK: 24 EN: 56 RU: 53
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Short to ground on FRP sensor signal wire
  • Open or low 5V reference to the sensor
  • Poor ground at sensor or ECM/PCM
  • Corroded, loose or damaged sensor connector
  • Failed fuel rail pressure sensor
  • Damaged wiring harness (chafing, pinched, rodent damage)

Symptoms

  • Check Engine Light (MIL) illuminated
  • Hard starting or extended cranking
  • Poor engine performance, hesitation or stalling
  • Reduced fuel economy
  • Engine may enter limp mode with reduced power
  • Fuel rail pressure PID reads abnormally low or shows no sensible change with throttle

What to check

  • Scan for P0192 and any related codes (P0191, P0193, fuel system pressure codes). Record freeze frame and live data.
  • Visually inspect fuel rail pressure sensor, connector and wiring for damage, corrosion or moisture.
  • Backprobe the sensor harness with key ON (engine OFF): verify 5V reference, sensor ground, and signal voltage.
  • Wiggle harness and connector while watching live data or voltage for intermittent changes.
  • Measure fuel rail pressure with a mechanical gauge to confirm actual rail pressure if needed.
  • Check battery/charging voltage to ensure stable supply during testing.

Signal parameters

  • Expected reference voltage: approx. 5.0 V (key ON) to sensor reference pin
  • Expected sensor ground: near 0 V continuity to chassis/ECM ground
  • Typical signal output: roughly 0.5–4.5 V across pressure range (varies by manufacturer)
  • Circuit low threshold: signal voltage detected below ~0.2–0.5 V triggers circuit-low DTC
  • Circuit high threshold: voltages above ~4.7–5.5 V may set circuit-high codes

Diagnostic algorithm

  1. Retrieve codes and freeze frame; note engine conditions when the code set (rpm, temp, rail pressure).
  2. Visually inspect the FRP sensor and harness for damage, corrosion, or water ingress at the connector and along harness routing.
  3. With ignition ON (engine OFF) backprobe sensor: verify 5V reference present, ground continuity to chassis, and signal voltage. If 5V missing, trace back to ECM and check fuses/relays.
  4. If reference and ground OK but signal is low (
  5. If wiring appears open/short-free, reconnect sensor and measure signal while applying known pressure (manual pressure source or run engine) and watch for proportional voltage change using a scan tool or DVOM.
  6. Perform wiggle test on wiring and connector while monitoring signal for intermittent faults. Check for pins pushed out or bent.
  7. If wiring and connector good but the sensor does not vary with pressure, replace the fuel rail pressure sensor and retest.
  8. If new sensor still reports circuit low and wiring checks show no fault, suspect ECM input fault—verify with manufacturer procedures before replacing ECM.
  9. After repairs or wiring fixes, clear codes and perform road test to confirm code does not return and that fuel pressure behavior is normal.

Likely causes

  • Corroded or disconnected sensor connector
  • Shorted signal wire to chassis ground
  • Failed fuel rail pressure sensor
  • Open or weak 5V reference or sensor ground
  • Intermittent wiring fault (movement, heat, moisture)

Fault status

⚠️ Status
P0192 — Fuel Rail Pressure Sensor Circuit Low (Bank 1). The FRP sensor signal voltage is below the expected threshold. Check sensor, wiring, connectors, and 5V reference/ground; an ECM fault is less common.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

Similar codes

P0190 P0191 P0193 P0087 P0088 P0230
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Code

P0192

GWM P — Powertrain

- Fuel Temperature Sensor Low

Brand: GWM
Type: P — Powertrain
Views: UK: 4 EN: 9 RU: 14
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Short to ground on FRP sensor signal wire
  • Open or low 5V reference to the sensor
  • Poor ground at sensor or ECM/PCM
  • Corroded, loose or damaged sensor connector
  • Failed fuel rail pressure sensor
  • Damaged wiring harness (chafing, pinched, rodent damage)

Symptoms

  • Check Engine Light (MIL) illuminated
  • Hard starting or extended cranking
  • Poor engine performance, hesitation or stalling
  • Reduced fuel economy
  • Engine may enter limp mode with reduced power
  • Fuel rail pressure PID reads abnormally low or shows no sensible change with throttle

What to check

  • Scan for P0192 and any related codes (P0191, P0193, fuel system pressure codes). Record freeze frame and live data.
  • Visually inspect fuel rail pressure sensor, connector and wiring for damage, corrosion or moisture.
  • Backprobe the sensor harness with key ON (engine OFF): verify 5V reference, sensor ground, and signal voltage.
  • Wiggle harness and connector while watching live data or voltage for intermittent changes.
  • Measure fuel rail pressure with a mechanical gauge to confirm actual rail pressure if needed.
  • Check battery/charging voltage to ensure stable supply during testing.

Signal parameters

  • Expected reference voltage: approx. 5.0 V (key ON) to sensor reference pin
  • Expected sensor ground: near 0 V continuity to chassis/ECM ground
  • Typical signal output: roughly 0.5–4.5 V across pressure range (varies by manufacturer)
  • Circuit low threshold: signal voltage detected below ~0.2–0.5 V triggers circuit-low DTC
  • Circuit high threshold: voltages above ~4.7–5.5 V may set circuit-high codes

Diagnostic algorithm

  1. Retrieve codes and freeze frame; note engine conditions when the code set (rpm, temp, rail pressure).
  2. Visually inspect the FRP sensor and harness for damage, corrosion, or water ingress at the connector and along harness routing.
  3. With ignition ON (engine OFF) backprobe sensor: verify 5V reference present, ground continuity to chassis, and signal voltage. If 5V missing, trace back to ECM and check fuses/relays.
  4. If reference and ground OK but signal is low (
  5. If wiring appears open/short-free, reconnect sensor and measure signal while applying known pressure (manual pressure source or run engine) and watch for proportional voltage change using a scan tool or DVOM.
  6. Perform wiggle test on wiring and connector while monitoring signal for intermittent faults. Check for pins pushed out or bent.
  7. If wiring and connector good but the sensor does not vary with pressure, replace the fuel rail pressure sensor and retest.
  8. If new sensor still reports circuit low and wiring checks show no fault, suspect ECM input fault—verify with manufacturer procedures before replacing ECM.
  9. After repairs or wiring fixes, clear codes and perform road test to confirm code does not return and that fuel pressure behavior is normal.

Likely causes

  • Corroded or disconnected sensor connector
  • Shorted signal wire to chassis ground
  • Failed fuel rail pressure sensor
  • Open or weak 5V reference or sensor ground
  • Intermittent wiring fault (movement, heat, moisture)

Fault status

⚠️ Status
P0192 — Fuel Rail Pressure Sensor Circuit Low (Bank 1). The FRP sensor signal voltage is below the expected threshold. Check sensor, wiring, connectors, and 5V reference/ground; an ECM fault is less common.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

Similar codes

P0190 P0191 P0193 P0087 P0088 P0230
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

P0192

HUMMER P — Powertrain

Fuel Rail Pressure Sensor Circuit Low Voltage

Brand: HUMMER
Type: P — Powertrain
Views: UK: 13 EN: 33 RU: 31
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Short to ground on FRP sensor signal wire
  • Open or low 5V reference to the sensor
  • Poor ground at sensor or ECM/PCM
  • Corroded, loose or damaged sensor connector
  • Failed fuel rail pressure sensor
  • Damaged wiring harness (chafing, pinched, rodent damage)

Symptoms

  • Check Engine Light (MIL) illuminated
  • Hard starting or extended cranking
  • Poor engine performance, hesitation or stalling
  • Reduced fuel economy
  • Engine may enter limp mode with reduced power
  • Fuel rail pressure PID reads abnormally low or shows no sensible change with throttle

What to check

  • Scan for P0192 and any related codes (P0191, P0193, fuel system pressure codes). Record freeze frame and live data.
  • Visually inspect fuel rail pressure sensor, connector and wiring for damage, corrosion or moisture.
  • Backprobe the sensor harness with key ON (engine OFF): verify 5V reference, sensor ground, and signal voltage.
  • Wiggle harness and connector while watching live data or voltage for intermittent changes.
  • Measure fuel rail pressure with a mechanical gauge to confirm actual rail pressure if needed.
  • Check battery/charging voltage to ensure stable supply during testing.

Signal parameters

  • Expected reference voltage: approx. 5.0 V (key ON) to sensor reference pin
  • Expected sensor ground: near 0 V continuity to chassis/ECM ground
  • Typical signal output: roughly 0.5–4.5 V across pressure range (varies by manufacturer)
  • Circuit low threshold: signal voltage detected below ~0.2–0.5 V triggers circuit-low DTC
  • Circuit high threshold: voltages above ~4.7–5.5 V may set circuit-high codes

Diagnostic algorithm

  1. Retrieve codes and freeze frame; note engine conditions when the code set (rpm, temp, rail pressure).
  2. Visually inspect the FRP sensor and harness for damage, corrosion, or water ingress at the connector and along harness routing.
  3. With ignition ON (engine OFF) backprobe sensor: verify 5V reference present, ground continuity to chassis, and signal voltage. If 5V missing, trace back to ECM and check fuses/relays.
  4. If reference and ground OK but signal is low (
  5. If wiring appears open/short-free, reconnect sensor and measure signal while applying known pressure (manual pressure source or run engine) and watch for proportional voltage change using a scan tool or DVOM.
  6. Perform wiggle test on wiring and connector while monitoring signal for intermittent faults. Check for pins pushed out or bent.
  7. If wiring and connector good but the sensor does not vary with pressure, replace the fuel rail pressure sensor and retest.
  8. If new sensor still reports circuit low and wiring checks show no fault, suspect ECM input fault—verify with manufacturer procedures before replacing ECM.
  9. After repairs or wiring fixes, clear codes and perform road test to confirm code does not return and that fuel pressure behavior is normal.

Likely causes

  • Corroded or disconnected sensor connector
  • Shorted signal wire to chassis ground
  • Failed fuel rail pressure sensor
  • Open or weak 5V reference or sensor ground
  • Intermittent wiring fault (movement, heat, moisture)

Fault status

⚠️ Status
P0192 — Fuel Rail Pressure Sensor Circuit Low (Bank 1). The FRP sensor signal voltage is below the expected threshold. Check sensor, wiring, connectors, and 5V reference/ground; an ECM fault is less common.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

Similar codes

P0190 P0191 P0193 P0087 P0088 P0230
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

P0192

ISUZU P — Powertrain

Fuel Rail Pressure Sensor Circuit Low

Brand: ISUZU
Type: P — Powertrain
Views: UK: 17 EN: 45 RU: 40
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Short to ground on FRP sensor signal wire
  • Open or low 5V reference to the sensor
  • Poor ground at sensor or ECM/PCM
  • Corroded, loose or damaged sensor connector
  • Failed fuel rail pressure sensor
  • Damaged wiring harness (chafing, pinched, rodent damage)

Symptoms

  • Check Engine Light (MIL) illuminated
  • Hard starting or extended cranking
  • Poor engine performance, hesitation or stalling
  • Reduced fuel economy
  • Engine may enter limp mode with reduced power
  • Fuel rail pressure PID reads abnormally low or shows no sensible change with throttle

What to check

  • Scan for P0192 and any related codes (P0191, P0193, fuel system pressure codes). Record freeze frame and live data.
  • Visually inspect fuel rail pressure sensor, connector and wiring for damage, corrosion or moisture.
  • Backprobe the sensor harness with key ON (engine OFF): verify 5V reference, sensor ground, and signal voltage.
  • Wiggle harness and connector while watching live data or voltage for intermittent changes.
  • Measure fuel rail pressure with a mechanical gauge to confirm actual rail pressure if needed.
  • Check battery/charging voltage to ensure stable supply during testing.

Signal parameters

  • Expected reference voltage: approx. 5.0 V (key ON) to sensor reference pin
  • Expected sensor ground: near 0 V continuity to chassis/ECM ground
  • Typical signal output: roughly 0.5–4.5 V across pressure range (varies by manufacturer)
  • Circuit low threshold: signal voltage detected below ~0.2–0.5 V triggers circuit-low DTC
  • Circuit high threshold: voltages above ~4.7–5.5 V may set circuit-high codes

Diagnostic algorithm

  1. Retrieve codes and freeze frame; note engine conditions when the code set (rpm, temp, rail pressure).
  2. Visually inspect the FRP sensor and harness for damage, corrosion, or water ingress at the connector and along harness routing.
  3. With ignition ON (engine OFF) backprobe sensor: verify 5V reference present, ground continuity to chassis, and signal voltage. If 5V missing, trace back to ECM and check fuses/relays.
  4. If reference and ground OK but signal is low (
  5. If wiring appears open/short-free, reconnect sensor and measure signal while applying known pressure (manual pressure source or run engine) and watch for proportional voltage change using a scan tool or DVOM.
  6. Perform wiggle test on wiring and connector while monitoring signal for intermittent faults. Check for pins pushed out or bent.
  7. If wiring and connector good but the sensor does not vary with pressure, replace the fuel rail pressure sensor and retest.
  8. If new sensor still reports circuit low and wiring checks show no fault, suspect ECM input fault—verify with manufacturer procedures before replacing ECM.
  9. After repairs or wiring fixes, clear codes and perform road test to confirm code does not return and that fuel pressure behavior is normal.

Likely causes

  • Corroded or disconnected sensor connector
  • Shorted signal wire to chassis ground
  • Failed fuel rail pressure sensor
  • Open or weak 5V reference or sensor ground
  • Intermittent wiring fault (movement, heat, moisture)

Fault status

⚠️ Status
P0192 — Fuel Rail Pressure Sensor Circuit Low (Bank 1). The FRP sensor signal voltage is below the expected threshold. Check sensor, wiring, connectors, and 5V reference/ground; an ECM fault is less common.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

Similar codes

P0190 P0191 P0193 P0087 P0088 P0230
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Code

P0192

LAND ROVER P — Powertrain

Fuel rail pressure sensor circuit low entry

Brand: LAND ROVER
Type: P — Powertrain
Views: UK: 3 EN: 18 RU: 24
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Short to ground on FRP sensor signal wire
  • Open or low 5V reference to the sensor
  • Poor ground at sensor or ECM/PCM
  • Corroded, loose or damaged sensor connector
  • Failed fuel rail pressure sensor
  • Damaged wiring harness (chafing, pinched, rodent damage)

Symptoms

  • Check Engine Light (MIL) illuminated
  • Hard starting or extended cranking
  • Poor engine performance, hesitation or stalling
  • Reduced fuel economy
  • Engine may enter limp mode with reduced power
  • Fuel rail pressure PID reads abnormally low or shows no sensible change with throttle

What to check

  • Scan for P0192 and any related codes (P0191, P0193, fuel system pressure codes). Record freeze frame and live data.
  • Visually inspect fuel rail pressure sensor, connector and wiring for damage, corrosion or moisture.
  • Backprobe the sensor harness with key ON (engine OFF): verify 5V reference, sensor ground, and signal voltage.
  • Wiggle harness and connector while watching live data or voltage for intermittent changes.
  • Measure fuel rail pressure with a mechanical gauge to confirm actual rail pressure if needed.
  • Check battery/charging voltage to ensure stable supply during testing.

Signal parameters

  • Expected reference voltage: approx. 5.0 V (key ON) to sensor reference pin
  • Expected sensor ground: near 0 V continuity to chassis/ECM ground
  • Typical signal output: roughly 0.5–4.5 V across pressure range (varies by manufacturer)
  • Circuit low threshold: signal voltage detected below ~0.2–0.5 V triggers circuit-low DTC
  • Circuit high threshold: voltages above ~4.7–5.5 V may set circuit-high codes

Diagnostic algorithm

  1. Retrieve codes and freeze frame; note engine conditions when the code set (rpm, temp, rail pressure).
  2. Visually inspect the FRP sensor and harness for damage, corrosion, or water ingress at the connector and along harness routing.
  3. With ignition ON (engine OFF) backprobe sensor: verify 5V reference present, ground continuity to chassis, and signal voltage. If 5V missing, trace back to ECM and check fuses/relays.
  4. If reference and ground OK but signal is low (
  5. If wiring appears open/short-free, reconnect sensor and measure signal while applying known pressure (manual pressure source or run engine) and watch for proportional voltage change using a scan tool or DVOM.
  6. Perform wiggle test on wiring and connector while monitoring signal for intermittent faults. Check for pins pushed out or bent.
  7. If wiring and connector good but the sensor does not vary with pressure, replace the fuel rail pressure sensor and retest.
  8. If new sensor still reports circuit low and wiring checks show no fault, suspect ECM input fault—verify with manufacturer procedures before replacing ECM.
  9. After repairs or wiring fixes, clear codes and perform road test to confirm code does not return and that fuel pressure behavior is normal.

Likely causes

  • Corroded or disconnected sensor connector
  • Shorted signal wire to chassis ground
  • Failed fuel rail pressure sensor
  • Open or weak 5V reference or sensor ground
  • Intermittent wiring fault (movement, heat, moisture)

Fault status

⚠️ Status
P0192 — Fuel Rail Pressure Sensor Circuit Low (Bank 1). The FRP sensor signal voltage is below the expected threshold. Check sensor, wiring, connectors, and 5V reference/ground; an ECM fault is less common.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

Similar codes

P0190 P0191 P0193 P0087 P0088 P0230
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Your experience will help others
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Code

P0192

MITSUBISHI P — Powertrain

Fuel pressure sensor low input

Brand: MITSUBISHI
Type: P — Powertrain
Views: UK: 12 EN: 36 RU: 31
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Short to ground on FRP sensor signal wire
  • Open or low 5V reference to the sensor
  • Poor ground at sensor or ECM/PCM
  • Corroded, loose or damaged sensor connector
  • Failed fuel rail pressure sensor
  • Damaged wiring harness (chafing, pinched, rodent damage)

Symptoms

  • Check Engine Light (MIL) illuminated
  • Hard starting or extended cranking
  • Poor engine performance, hesitation or stalling
  • Reduced fuel economy
  • Engine may enter limp mode with reduced power
  • Fuel rail pressure PID reads abnormally low or shows no sensible change with throttle

What to check

  • Scan for P0192 and any related codes (P0191, P0193, fuel system pressure codes). Record freeze frame and live data.
  • Visually inspect fuel rail pressure sensor, connector and wiring for damage, corrosion or moisture.
  • Backprobe the sensor harness with key ON (engine OFF): verify 5V reference, sensor ground, and signal voltage.
  • Wiggle harness and connector while watching live data or voltage for intermittent changes.
  • Measure fuel rail pressure with a mechanical gauge to confirm actual rail pressure if needed.
  • Check battery/charging voltage to ensure stable supply during testing.

Signal parameters

  • Expected reference voltage: approx. 5.0 V (key ON) to sensor reference pin
  • Expected sensor ground: near 0 V continuity to chassis/ECM ground
  • Typical signal output: roughly 0.5–4.5 V across pressure range (varies by manufacturer)
  • Circuit low threshold: signal voltage detected below ~0.2–0.5 V triggers circuit-low DTC
  • Circuit high threshold: voltages above ~4.7–5.5 V may set circuit-high codes

Diagnostic algorithm

  1. Retrieve codes and freeze frame; note engine conditions when the code set (rpm, temp, rail pressure).
  2. Visually inspect the FRP sensor and harness for damage, corrosion, or water ingress at the connector and along harness routing.
  3. With ignition ON (engine OFF) backprobe sensor: verify 5V reference present, ground continuity to chassis, and signal voltage. If 5V missing, trace back to ECM and check fuses/relays.
  4. If reference and ground OK but signal is low (
  5. If wiring appears open/short-free, reconnect sensor and measure signal while applying known pressure (manual pressure source or run engine) and watch for proportional voltage change using a scan tool or DVOM.
  6. Perform wiggle test on wiring and connector while monitoring signal for intermittent faults. Check for pins pushed out or bent.
  7. If wiring and connector good but the sensor does not vary with pressure, replace the fuel rail pressure sensor and retest.
  8. If new sensor still reports circuit low and wiring checks show no fault, suspect ECM input fault—verify with manufacturer procedures before replacing ECM.
  9. After repairs or wiring fixes, clear codes and perform road test to confirm code does not return and that fuel pressure behavior is normal.

Likely causes

  • Corroded or disconnected sensor connector
  • Shorted signal wire to chassis ground
  • Failed fuel rail pressure sensor
  • Open or weak 5V reference or sensor ground
  • Intermittent wiring fault (movement, heat, moisture)

Fault status

⚠️ Status
P0192 — Fuel Rail Pressure Sensor Circuit Low (Bank 1). The FRP sensor signal voltage is below the expected threshold. Check sensor, wiring, connectors, and 5V reference/ground; an ECM fault is less common.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

Similar codes

P0190 P0191 P0193 P0087 P0088 P0230
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email

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