Code
P1460
BMW
P — Powertrain
Heated Catalyst Heater Power Switch Temperature Sensor Electrical Bank 2
Views:
UK: 30
EN: 54
RU: 25
AI status
Completed
Completed
100%
Causes
- Open or short in wiring harness to the heated catalyst temperature sensor (Bank 2)
- Corroded, loose, or damaged connector/pins at the sensor or ECM
- Failed heated catalyst temperature sensor module or integrated switch/heater assembly
- Blown fuse or loss of power to the heater power switch circuit
- Poor or missing ground connection for the heater/sensor circuit
- Heat damage from exhaust, road debris, or previous repairs
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated/engine light on
- Possible limp-home behavior or reduced engine performance in some vehicles
- Heated catalyst/heater may fail to operate (increasing emissions)
- Failed emissions/inspection test (catalyst/heater related)
- Diagnostic trouble codes stored for heated catalyst/heater or related oxygen/catalyst circuits
What to check
- Use a scan tool: read stored codes, pending codes, and freeze-frame data; note related codes and readiness status
- Monitor live data for the heated catalyst temperature sensor and heater status for Bank 2; compare with Bank 1
- Visually inspect harness and connectors at the heated catalyst sensor and along routing to ECM for heat damage, chafing, corrosion, or pin pushing
- Perform a wiggle test while monitoring signal for intermittent changes
- Check for blown fuses and proper relay operation supplying the heater circuit
- Back-probe connector to check supply voltage, control signal (ECM output), and ground with key on and during commanded heater operation
Signal parameters
- Temperature sensor: NTC-type behavior — resistance decreases as temperature increases (measure with sensor cold and when warmed if safe)
- Temperature sensor voltage (back-probed): typically within 0.1–4.9 V depending on temperature and ECU pull-up — should change smoothly with temperature
- Heater power/control: likely switched battery voltage or PWM output from ECM when heater is commanded (0 V to battery voltage or PWM duty cycle)
- Compare Bank 2 sensor values to Bank 1 (if Bank 1 is known-good) to spot differences
Diagnostic algorithm
- Retrieve and record all related DTCs and freeze-frame data using a capable scan tool
- If multiple related codes exist, prioritize wiring/power/ground checks before component replacement
- Perform a careful visual inspection of the heated catalyst sensor, connector, and harness for heat damage, melted insulation, chafing, or corrosion; allow components to cool before touching
- Check fuses/relays for the heater power circuit and replace if faulty
- Back-probe the sensor connector with key ON: verify reference voltage/pull-up, sensor signal voltage, and ground presence; record values
- Command the heater ON using a diagnostic tool (if available) and observe control output and supply voltage; look for expected change (voltage or PWM)
- Disconnect the sensor and measure its resistance cold; if possible, apply controlled heat (heat gun briefly at safe distance) to confirm NTC resistance change. Do not use open flame and avoid overheating or touching hot exhaust
- Perform continuity/resistance checks between sensor connector and ECM harness pins to identify opens or shorts; check for short to ground or battery positive
- Repair any damaged wiring, connectors, or poor grounds. Replace the heated catalyst sensor/heater assembly if tests show the sensor/module is faulty.
- After repairs clear codes, perform a relearn if required, and road test to confirm the fault does not return and heater/sensor readings behave normally
- If wiring and sensor check good but fault persists, consider ECM input/driver fault and consult dealer-level diagnostics or replace ECM only after exhaustive verification
- Observe workshop safety: allow exhaust components to cool, use heat-resistant gloves, and secure vehicle on stable supports when working underneath
Likely causes
- Damaged connector or wiring chafing near the exhaust/catalyst causing intermittent open/short
- Failed temperature sensor or integrated heater/switch module on Bank 2
- Loss of supply or ground to the heater control circuit (fuse, relay, grounding strap)
- Corrosion at the sensor plug or pin making resistance/voltage readings invalid
Fault status
Status
Heated catalyst heater power switch temperature sensor electrical fault detected on Bank 2. Circuit open/short or invalid signal — heater function may be disabled. Inspect sensor, connector, supply, ground, and wiring to ECM.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
P1460
BUICK
P — Powertrain
Cooling Fan Control System
Views:
UK: 31
EN: 55
RU: 32
AI status
Completed
Completed
100%
Causes
- Open or short in wiring harness to the heated catalyst temperature sensor (Bank 2)
- Corroded, loose, or damaged connector/pins at the sensor or ECM
- Failed heated catalyst temperature sensor module or integrated switch/heater assembly
- Blown fuse or loss of power to the heater power switch circuit
- Poor or missing ground connection for the heater/sensor circuit
- Heat damage from exhaust, road debris, or previous repairs
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated/engine light on
- Possible limp-home behavior or reduced engine performance in some vehicles
- Heated catalyst/heater may fail to operate (increasing emissions)
- Failed emissions/inspection test (catalyst/heater related)
- Diagnostic trouble codes stored for heated catalyst/heater or related oxygen/catalyst circuits
What to check
- Use a scan tool: read stored codes, pending codes, and freeze-frame data; note related codes and readiness status
- Monitor live data for the heated catalyst temperature sensor and heater status for Bank 2; compare with Bank 1
- Visually inspect harness and connectors at the heated catalyst sensor and along routing to ECM for heat damage, chafing, corrosion, or pin pushing
- Perform a wiggle test while monitoring signal for intermittent changes
- Check for blown fuses and proper relay operation supplying the heater circuit
- Back-probe connector to check supply voltage, control signal (ECM output), and ground with key on and during commanded heater operation
Signal parameters
- Temperature sensor: NTC-type behavior — resistance decreases as temperature increases (measure with sensor cold and when warmed if safe)
- Temperature sensor voltage (back-probed): typically within 0.1–4.9 V depending on temperature and ECU pull-up — should change smoothly with temperature
- Heater power/control: likely switched battery voltage or PWM output from ECM when heater is commanded (0 V to battery voltage or PWM duty cycle)
- Compare Bank 2 sensor values to Bank 1 (if Bank 1 is known-good) to spot differences
Diagnostic algorithm
- Retrieve and record all related DTCs and freeze-frame data using a capable scan tool
- If multiple related codes exist, prioritize wiring/power/ground checks before component replacement
- Perform a careful visual inspection of the heated catalyst sensor, connector, and harness for heat damage, melted insulation, chafing, or corrosion; allow components to cool before touching
- Check fuses/relays for the heater power circuit and replace if faulty
- Back-probe the sensor connector with key ON: verify reference voltage/pull-up, sensor signal voltage, and ground presence; record values
- Command the heater ON using a diagnostic tool (if available) and observe control output and supply voltage; look for expected change (voltage or PWM)
- Disconnect the sensor and measure its resistance cold; if possible, apply controlled heat (heat gun briefly at safe distance) to confirm NTC resistance change. Do not use open flame and avoid overheating or touching hot exhaust
- Perform continuity/resistance checks between sensor connector and ECM harness pins to identify opens or shorts; check for short to ground or battery positive
- Repair any damaged wiring, connectors, or poor grounds. Replace the heated catalyst sensor/heater assembly if tests show the sensor/module is faulty.
- After repairs clear codes, perform a relearn if required, and road test to confirm the fault does not return and heater/sensor readings behave normally
- If wiring and sensor check good but fault persists, consider ECM input/driver fault and consult dealer-level diagnostics or replace ECM only after exhaustive verification
- Observe workshop safety: allow exhaust components to cool, use heat-resistant gloves, and secure vehicle on stable supports when working underneath
Likely causes
- Damaged connector or wiring chafing near the exhaust/catalyst causing intermittent open/short
- Failed temperature sensor or integrated heater/switch module on Bank 2
- Loss of supply or ground to the heater control circuit (fuse, relay, grounding strap)
- Corrosion at the sensor plug or pin making resistance/voltage readings invalid
Fault status
Status
Heated catalyst heater power switch temperature sensor electrical fault detected on Bank 2. Circuit open/short or invalid signal — heater function may be disabled. Inspect sensor, connector, supply, ground, and wiring to ECM.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
P1460
CADILLAC
P — Powertrain
Cooling Fan Control System
Views:
UK: 35
EN: 58
RU: 27
AI status
Completed
Completed
100%
Causes
- Open or short in wiring harness to the heated catalyst temperature sensor (Bank 2)
- Corroded, loose, or damaged connector/pins at the sensor or ECM
- Failed heated catalyst temperature sensor module or integrated switch/heater assembly
- Blown fuse or loss of power to the heater power switch circuit
- Poor or missing ground connection for the heater/sensor circuit
- Heat damage from exhaust, road debris, or previous repairs
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated/engine light on
- Possible limp-home behavior or reduced engine performance in some vehicles
- Heated catalyst/heater may fail to operate (increasing emissions)
- Failed emissions/inspection test (catalyst/heater related)
- Diagnostic trouble codes stored for heated catalyst/heater or related oxygen/catalyst circuits
What to check
- Use a scan tool: read stored codes, pending codes, and freeze-frame data; note related codes and readiness status
- Monitor live data for the heated catalyst temperature sensor and heater status for Bank 2; compare with Bank 1
- Visually inspect harness and connectors at the heated catalyst sensor and along routing to ECM for heat damage, chafing, corrosion, or pin pushing
- Perform a wiggle test while monitoring signal for intermittent changes
- Check for blown fuses and proper relay operation supplying the heater circuit
- Back-probe connector to check supply voltage, control signal (ECM output), and ground with key on and during commanded heater operation
Signal parameters
- Temperature sensor: NTC-type behavior — resistance decreases as temperature increases (measure with sensor cold and when warmed if safe)
- Temperature sensor voltage (back-probed): typically within 0.1–4.9 V depending on temperature and ECU pull-up — should change smoothly with temperature
- Heater power/control: likely switched battery voltage or PWM output from ECM when heater is commanded (0 V to battery voltage or PWM duty cycle)
- Compare Bank 2 sensor values to Bank 1 (if Bank 1 is known-good) to spot differences
Diagnostic algorithm
- Retrieve and record all related DTCs and freeze-frame data using a capable scan tool
- If multiple related codes exist, prioritize wiring/power/ground checks before component replacement
- Perform a careful visual inspection of the heated catalyst sensor, connector, and harness for heat damage, melted insulation, chafing, or corrosion; allow components to cool before touching
- Check fuses/relays for the heater power circuit and replace if faulty
- Back-probe the sensor connector with key ON: verify reference voltage/pull-up, sensor signal voltage, and ground presence; record values
- Command the heater ON using a diagnostic tool (if available) and observe control output and supply voltage; look for expected change (voltage or PWM)
- Disconnect the sensor and measure its resistance cold; if possible, apply controlled heat (heat gun briefly at safe distance) to confirm NTC resistance change. Do not use open flame and avoid overheating or touching hot exhaust
- Perform continuity/resistance checks between sensor connector and ECM harness pins to identify opens or shorts; check for short to ground or battery positive
- Repair any damaged wiring, connectors, or poor grounds. Replace the heated catalyst sensor/heater assembly if tests show the sensor/module is faulty.
- After repairs clear codes, perform a relearn if required, and road test to confirm the fault does not return and heater/sensor readings behave normally
- If wiring and sensor check good but fault persists, consider ECM input/driver fault and consult dealer-level diagnostics or replace ECM only after exhaustive verification
- Observe workshop safety: allow exhaust components to cool, use heat-resistant gloves, and secure vehicle on stable supports when working underneath
Likely causes
- Damaged connector or wiring chafing near the exhaust/catalyst causing intermittent open/short
- Failed temperature sensor or integrated heater/switch module on Bank 2
- Loss of supply or ground to the heater control circuit (fuse, relay, grounding strap)
- Corrosion at the sensor plug or pin making resistance/voltage readings invalid
Fault status
Status
Heated catalyst heater power switch temperature sensor electrical fault detected on Bank 2. Circuit open/short or invalid signal — heater function may be disabled. Inspect sensor, connector, supply, ground, and wiring to ECM.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
P1460
CHEVROLET
P — Powertrain
Cooling Fan Control System
Views:
UK: 32
EN: 59
RU: 29
AI status
Completed
Completed
100%
Causes
- Open or short in wiring harness to the heated catalyst temperature sensor (Bank 2)
- Corroded, loose, or damaged connector/pins at the sensor or ECM
- Failed heated catalyst temperature sensor module or integrated switch/heater assembly
- Blown fuse or loss of power to the heater power switch circuit
- Poor or missing ground connection for the heater/sensor circuit
- Heat damage from exhaust, road debris, or previous repairs
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated/engine light on
- Possible limp-home behavior or reduced engine performance in some vehicles
- Heated catalyst/heater may fail to operate (increasing emissions)
- Failed emissions/inspection test (catalyst/heater related)
- Diagnostic trouble codes stored for heated catalyst/heater or related oxygen/catalyst circuits
What to check
- Use a scan tool: read stored codes, pending codes, and freeze-frame data; note related codes and readiness status
- Monitor live data for the heated catalyst temperature sensor and heater status for Bank 2; compare with Bank 1
- Visually inspect harness and connectors at the heated catalyst sensor and along routing to ECM for heat damage, chafing, corrosion, or pin pushing
- Perform a wiggle test while monitoring signal for intermittent changes
- Check for blown fuses and proper relay operation supplying the heater circuit
- Back-probe connector to check supply voltage, control signal (ECM output), and ground with key on and during commanded heater operation
Signal parameters
- Temperature sensor: NTC-type behavior — resistance decreases as temperature increases (measure with sensor cold and when warmed if safe)
- Temperature sensor voltage (back-probed): typically within 0.1–4.9 V depending on temperature and ECU pull-up — should change smoothly with temperature
- Heater power/control: likely switched battery voltage or PWM output from ECM when heater is commanded (0 V to battery voltage or PWM duty cycle)
- Compare Bank 2 sensor values to Bank 1 (if Bank 1 is known-good) to spot differences
Diagnostic algorithm
- Retrieve and record all related DTCs and freeze-frame data using a capable scan tool
- If multiple related codes exist, prioritize wiring/power/ground checks before component replacement
- Perform a careful visual inspection of the heated catalyst sensor, connector, and harness for heat damage, melted insulation, chafing, or corrosion; allow components to cool before touching
- Check fuses/relays for the heater power circuit and replace if faulty
- Back-probe the sensor connector with key ON: verify reference voltage/pull-up, sensor signal voltage, and ground presence; record values
- Command the heater ON using a diagnostic tool (if available) and observe control output and supply voltage; look for expected change (voltage or PWM)
- Disconnect the sensor and measure its resistance cold; if possible, apply controlled heat (heat gun briefly at safe distance) to confirm NTC resistance change. Do not use open flame and avoid overheating or touching hot exhaust
- Perform continuity/resistance checks between sensor connector and ECM harness pins to identify opens or shorts; check for short to ground or battery positive
- Repair any damaged wiring, connectors, or poor grounds. Replace the heated catalyst sensor/heater assembly if tests show the sensor/module is faulty.
- After repairs clear codes, perform a relearn if required, and road test to confirm the fault does not return and heater/sensor readings behave normally
- If wiring and sensor check good but fault persists, consider ECM input/driver fault and consult dealer-level diagnostics or replace ECM only after exhaustive verification
- Observe workshop safety: allow exhaust components to cool, use heat-resistant gloves, and secure vehicle on stable supports when working underneath
Likely causes
- Damaged connector or wiring chafing near the exhaust/catalyst causing intermittent open/short
- Failed temperature sensor or integrated heater/switch module on Bank 2
- Loss of supply or ground to the heater control circuit (fuse, relay, grounding strap)
- Corrosion at the sensor plug or pin making resistance/voltage readings invalid
Fault status
Status
Heated catalyst heater power switch temperature sensor electrical fault detected on Bank 2. Circuit open/short or invalid signal — heater function may be disabled. Inspect sensor, connector, supply, ground, and wiring to ECM.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
P1460
CHRYSLER
P — Powertrain
Cooling Fan Control System
Views:
UK: 36
EN: 63
RU: 27
AI status
Completed
Completed
100%
Causes
- Open or short in wiring harness to the heated catalyst temperature sensor (Bank 2)
- Corroded, loose, or damaged connector/pins at the sensor or ECM
- Failed heated catalyst temperature sensor module or integrated switch/heater assembly
- Blown fuse or loss of power to the heater power switch circuit
- Poor or missing ground connection for the heater/sensor circuit
- Heat damage from exhaust, road debris, or previous repairs
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated/engine light on
- Possible limp-home behavior or reduced engine performance in some vehicles
- Heated catalyst/heater may fail to operate (increasing emissions)
- Failed emissions/inspection test (catalyst/heater related)
- Diagnostic trouble codes stored for heated catalyst/heater or related oxygen/catalyst circuits
What to check
- Use a scan tool: read stored codes, pending codes, and freeze-frame data; note related codes and readiness status
- Monitor live data for the heated catalyst temperature sensor and heater status for Bank 2; compare with Bank 1
- Visually inspect harness and connectors at the heated catalyst sensor and along routing to ECM for heat damage, chafing, corrosion, or pin pushing
- Perform a wiggle test while monitoring signal for intermittent changes
- Check for blown fuses and proper relay operation supplying the heater circuit
- Back-probe connector to check supply voltage, control signal (ECM output), and ground with key on and during commanded heater operation
Signal parameters
- Temperature sensor: NTC-type behavior — resistance decreases as temperature increases (measure with sensor cold and when warmed if safe)
- Temperature sensor voltage (back-probed): typically within 0.1–4.9 V depending on temperature and ECU pull-up — should change smoothly with temperature
- Heater power/control: likely switched battery voltage or PWM output from ECM when heater is commanded (0 V to battery voltage or PWM duty cycle)
- Compare Bank 2 sensor values to Bank 1 (if Bank 1 is known-good) to spot differences
Diagnostic algorithm
- Retrieve and record all related DTCs and freeze-frame data using a capable scan tool
- If multiple related codes exist, prioritize wiring/power/ground checks before component replacement
- Perform a careful visual inspection of the heated catalyst sensor, connector, and harness for heat damage, melted insulation, chafing, or corrosion; allow components to cool before touching
- Check fuses/relays for the heater power circuit and replace if faulty
- Back-probe the sensor connector with key ON: verify reference voltage/pull-up, sensor signal voltage, and ground presence; record values
- Command the heater ON using a diagnostic tool (if available) and observe control output and supply voltage; look for expected change (voltage or PWM)
- Disconnect the sensor and measure its resistance cold; if possible, apply controlled heat (heat gun briefly at safe distance) to confirm NTC resistance change. Do not use open flame and avoid overheating or touching hot exhaust
- Perform continuity/resistance checks between sensor connector and ECM harness pins to identify opens or shorts; check for short to ground or battery positive
- Repair any damaged wiring, connectors, or poor grounds. Replace the heated catalyst sensor/heater assembly if tests show the sensor/module is faulty.
- After repairs clear codes, perform a relearn if required, and road test to confirm the fault does not return and heater/sensor readings behave normally
- If wiring and sensor check good but fault persists, consider ECM input/driver fault and consult dealer-level diagnostics or replace ECM only after exhaustive verification
- Observe workshop safety: allow exhaust components to cool, use heat-resistant gloves, and secure vehicle on stable supports when working underneath
Likely causes
- Damaged connector or wiring chafing near the exhaust/catalyst causing intermittent open/short
- Failed temperature sensor or integrated heater/switch module on Bank 2
- Loss of supply or ground to the heater control circuit (fuse, relay, grounding strap)
- Corrosion at the sensor plug or pin making resistance/voltage readings invalid
Fault status
Status
Heated catalyst heater power switch temperature sensor electrical fault detected on Bank 2. Circuit open/short or invalid signal — heater function may be disabled. Inspect sensor, connector, supply, ground, and wiring to ECM.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
P1460
FORD
P — Powertrain
Wide Open Throttle Air Conditioning Cutoff Circuit Malfunction
Views:
UK: 33
EN: 57
RU: 31
AI status
Completed
Completed
100%
Causes
- Open or short in wiring harness to the heated catalyst temperature sensor (Bank 2)
- Corroded, loose, or damaged connector/pins at the sensor or ECM
- Failed heated catalyst temperature sensor module or integrated switch/heater assembly
- Blown fuse or loss of power to the heater power switch circuit
- Poor or missing ground connection for the heater/sensor circuit
- Heat damage from exhaust, road debris, or previous repairs
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated/engine light on
- Possible limp-home behavior or reduced engine performance in some vehicles
- Heated catalyst/heater may fail to operate (increasing emissions)
- Failed emissions/inspection test (catalyst/heater related)
- Diagnostic trouble codes stored for heated catalyst/heater or related oxygen/catalyst circuits
What to check
- Use a scan tool: read stored codes, pending codes, and freeze-frame data; note related codes and readiness status
- Monitor live data for the heated catalyst temperature sensor and heater status for Bank 2; compare with Bank 1
- Visually inspect harness and connectors at the heated catalyst sensor and along routing to ECM for heat damage, chafing, corrosion, or pin pushing
- Perform a wiggle test while monitoring signal for intermittent changes
- Check for blown fuses and proper relay operation supplying the heater circuit
- Back-probe connector to check supply voltage, control signal (ECM output), and ground with key on and during commanded heater operation
Signal parameters
- Temperature sensor: NTC-type behavior — resistance decreases as temperature increases (measure with sensor cold and when warmed if safe)
- Temperature sensor voltage (back-probed): typically within 0.1–4.9 V depending on temperature and ECU pull-up — should change smoothly with temperature
- Heater power/control: likely switched battery voltage or PWM output from ECM when heater is commanded (0 V to battery voltage or PWM duty cycle)
- Compare Bank 2 sensor values to Bank 1 (if Bank 1 is known-good) to spot differences
Diagnostic algorithm
- Retrieve and record all related DTCs and freeze-frame data using a capable scan tool
- If multiple related codes exist, prioritize wiring/power/ground checks before component replacement
- Perform a careful visual inspection of the heated catalyst sensor, connector, and harness for heat damage, melted insulation, chafing, or corrosion; allow components to cool before touching
- Check fuses/relays for the heater power circuit and replace if faulty
- Back-probe the sensor connector with key ON: verify reference voltage/pull-up, sensor signal voltage, and ground presence; record values
- Command the heater ON using a diagnostic tool (if available) and observe control output and supply voltage; look for expected change (voltage or PWM)
- Disconnect the sensor and measure its resistance cold; if possible, apply controlled heat (heat gun briefly at safe distance) to confirm NTC resistance change. Do not use open flame and avoid overheating or touching hot exhaust
- Perform continuity/resistance checks between sensor connector and ECM harness pins to identify opens or shorts; check for short to ground or battery positive
- Repair any damaged wiring, connectors, or poor grounds. Replace the heated catalyst sensor/heater assembly if tests show the sensor/module is faulty.
- After repairs clear codes, perform a relearn if required, and road test to confirm the fault does not return and heater/sensor readings behave normally
- If wiring and sensor check good but fault persists, consider ECM input/driver fault and consult dealer-level diagnostics or replace ECM only after exhaustive verification
- Observe workshop safety: allow exhaust components to cool, use heat-resistant gloves, and secure vehicle on stable supports when working underneath
Likely causes
- Damaged connector or wiring chafing near the exhaust/catalyst causing intermittent open/short
- Failed temperature sensor or integrated heater/switch module on Bank 2
- Loss of supply or ground to the heater control circuit (fuse, relay, grounding strap)
- Corrosion at the sensor plug or pin making resistance/voltage readings invalid
Fault status
Status
Heated catalyst heater power switch temperature sensor electrical fault detected on Bank 2. Circuit open/short or invalid signal — heater function may be disabled. Inspect sensor, connector, supply, ground, and wiring to ECM.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
P1460
GEO
P — Powertrain
Cooling Fan Control System Fault
Views:
UK: 33
EN: 65
RU: 25
AI status
Completed
Completed
100%
Causes
- Open or short in wiring harness to the heated catalyst temperature sensor (Bank 2)
- Corroded, loose, or damaged connector/pins at the sensor or ECM
- Failed heated catalyst temperature sensor module or integrated switch/heater assembly
- Blown fuse or loss of power to the heater power switch circuit
- Poor or missing ground connection for the heater/sensor circuit
- Heat damage from exhaust, road debris, or previous repairs
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated/engine light on
- Possible limp-home behavior or reduced engine performance in some vehicles
- Heated catalyst/heater may fail to operate (increasing emissions)
- Failed emissions/inspection test (catalyst/heater related)
- Diagnostic trouble codes stored for heated catalyst/heater or related oxygen/catalyst circuits
What to check
- Use a scan tool: read stored codes, pending codes, and freeze-frame data; note related codes and readiness status
- Monitor live data for the heated catalyst temperature sensor and heater status for Bank 2; compare with Bank 1
- Visually inspect harness and connectors at the heated catalyst sensor and along routing to ECM for heat damage, chafing, corrosion, or pin pushing
- Perform a wiggle test while monitoring signal for intermittent changes
- Check for blown fuses and proper relay operation supplying the heater circuit
- Back-probe connector to check supply voltage, control signal (ECM output), and ground with key on and during commanded heater operation
Signal parameters
- Temperature sensor: NTC-type behavior — resistance decreases as temperature increases (measure with sensor cold and when warmed if safe)
- Temperature sensor voltage (back-probed): typically within 0.1–4.9 V depending on temperature and ECU pull-up — should change smoothly with temperature
- Heater power/control: likely switched battery voltage or PWM output from ECM when heater is commanded (0 V to battery voltage or PWM duty cycle)
- Compare Bank 2 sensor values to Bank 1 (if Bank 1 is known-good) to spot differences
Diagnostic algorithm
- Retrieve and record all related DTCs and freeze-frame data using a capable scan tool
- If multiple related codes exist, prioritize wiring/power/ground checks before component replacement
- Perform a careful visual inspection of the heated catalyst sensor, connector, and harness for heat damage, melted insulation, chafing, or corrosion; allow components to cool before touching
- Check fuses/relays for the heater power circuit and replace if faulty
- Back-probe the sensor connector with key ON: verify reference voltage/pull-up, sensor signal voltage, and ground presence; record values
- Command the heater ON using a diagnostic tool (if available) and observe control output and supply voltage; look for expected change (voltage or PWM)
- Disconnect the sensor and measure its resistance cold; if possible, apply controlled heat (heat gun briefly at safe distance) to confirm NTC resistance change. Do not use open flame and avoid overheating or touching hot exhaust
- Perform continuity/resistance checks between sensor connector and ECM harness pins to identify opens or shorts; check for short to ground or battery positive
- Repair any damaged wiring, connectors, or poor grounds. Replace the heated catalyst sensor/heater assembly if tests show the sensor/module is faulty.
- After repairs clear codes, perform a relearn if required, and road test to confirm the fault does not return and heater/sensor readings behave normally
- If wiring and sensor check good but fault persists, consider ECM input/driver fault and consult dealer-level diagnostics or replace ECM only after exhaustive verification
- Observe workshop safety: allow exhaust components to cool, use heat-resistant gloves, and secure vehicle on stable supports when working underneath
Likely causes
- Damaged connector or wiring chafing near the exhaust/catalyst causing intermittent open/short
- Failed temperature sensor or integrated heater/switch module on Bank 2
- Loss of supply or ground to the heater control circuit (fuse, relay, grounding strap)
- Corrosion at the sensor plug or pin making resistance/voltage readings invalid
Fault status
Status
Heated catalyst heater power switch temperature sensor electrical fault detected on Bank 2. Circuit open/short or invalid signal — heater function may be disabled. Inspect sensor, connector, supply, ground, and wiring to ECM.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
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Send to email
Code
P1460
GM
P — Powertrain
Cooling Fan Control System
Views:
UK: 34
EN: 78
RU: 30
AI status
Completed
Completed
100%
Causes
- Open or short in wiring harness to the heated catalyst temperature sensor (Bank 2)
- Corroded, loose, or damaged connector/pins at the sensor or ECM
- Failed heated catalyst temperature sensor module or integrated switch/heater assembly
- Blown fuse or loss of power to the heater power switch circuit
- Poor or missing ground connection for the heater/sensor circuit
- Heat damage from exhaust, road debris, or previous repairs
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated/engine light on
- Possible limp-home behavior or reduced engine performance in some vehicles
- Heated catalyst/heater may fail to operate (increasing emissions)
- Failed emissions/inspection test (catalyst/heater related)
- Diagnostic trouble codes stored for heated catalyst/heater or related oxygen/catalyst circuits
What to check
- Use a scan tool: read stored codes, pending codes, and freeze-frame data; note related codes and readiness status
- Monitor live data for the heated catalyst temperature sensor and heater status for Bank 2; compare with Bank 1
- Visually inspect harness and connectors at the heated catalyst sensor and along routing to ECM for heat damage, chafing, corrosion, or pin pushing
- Perform a wiggle test while monitoring signal for intermittent changes
- Check for blown fuses and proper relay operation supplying the heater circuit
- Back-probe connector to check supply voltage, control signal (ECM output), and ground with key on and during commanded heater operation
Signal parameters
- Temperature sensor: NTC-type behavior — resistance decreases as temperature increases (measure with sensor cold and when warmed if safe)
- Temperature sensor voltage (back-probed): typically within 0.1–4.9 V depending on temperature and ECU pull-up — should change smoothly with temperature
- Heater power/control: likely switched battery voltage or PWM output from ECM when heater is commanded (0 V to battery voltage or PWM duty cycle)
- Compare Bank 2 sensor values to Bank 1 (if Bank 1 is known-good) to spot differences
Diagnostic algorithm
- Retrieve and record all related DTCs and freeze-frame data using a capable scan tool
- If multiple related codes exist, prioritize wiring/power/ground checks before component replacement
- Perform a careful visual inspection of the heated catalyst sensor, connector, and harness for heat damage, melted insulation, chafing, or corrosion; allow components to cool before touching
- Check fuses/relays for the heater power circuit and replace if faulty
- Back-probe the sensor connector with key ON: verify reference voltage/pull-up, sensor signal voltage, and ground presence; record values
- Command the heater ON using a diagnostic tool (if available) and observe control output and supply voltage; look for expected change (voltage or PWM)
- Disconnect the sensor and measure its resistance cold; if possible, apply controlled heat (heat gun briefly at safe distance) to confirm NTC resistance change. Do not use open flame and avoid overheating or touching hot exhaust
- Perform continuity/resistance checks between sensor connector and ECM harness pins to identify opens or shorts; check for short to ground or battery positive
- Repair any damaged wiring, connectors, or poor grounds. Replace the heated catalyst sensor/heater assembly if tests show the sensor/module is faulty.
- After repairs clear codes, perform a relearn if required, and road test to confirm the fault does not return and heater/sensor readings behave normally
- If wiring and sensor check good but fault persists, consider ECM input/driver fault and consult dealer-level diagnostics or replace ECM only after exhaustive verification
- Observe workshop safety: allow exhaust components to cool, use heat-resistant gloves, and secure vehicle on stable supports when working underneath
Likely causes
- Damaged connector or wiring chafing near the exhaust/catalyst causing intermittent open/short
- Failed temperature sensor or integrated heater/switch module on Bank 2
- Loss of supply or ground to the heater control circuit (fuse, relay, grounding strap)
- Corrosion at the sensor plug or pin making resistance/voltage readings invalid
Fault status
Status
Heated catalyst heater power switch temperature sensor electrical fault detected on Bank 2. Circuit open/short or invalid signal — heater function may be disabled. Inspect sensor, connector, supply, ground, and wiring to ECM.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
P1460
GMC
P — Powertrain
Cooling Fan Control System
Views:
UK: 37
EN: 54
RU: 29
AI status
Completed
Completed
100%
Causes
- Open or short in wiring harness to the heated catalyst temperature sensor (Bank 2)
- Corroded, loose, or damaged connector/pins at the sensor or ECM
- Failed heated catalyst temperature sensor module or integrated switch/heater assembly
- Blown fuse or loss of power to the heater power switch circuit
- Poor or missing ground connection for the heater/sensor circuit
- Heat damage from exhaust, road debris, or previous repairs
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated/engine light on
- Possible limp-home behavior or reduced engine performance in some vehicles
- Heated catalyst/heater may fail to operate (increasing emissions)
- Failed emissions/inspection test (catalyst/heater related)
- Diagnostic trouble codes stored for heated catalyst/heater or related oxygen/catalyst circuits
What to check
- Use a scan tool: read stored codes, pending codes, and freeze-frame data; note related codes and readiness status
- Monitor live data for the heated catalyst temperature sensor and heater status for Bank 2; compare with Bank 1
- Visually inspect harness and connectors at the heated catalyst sensor and along routing to ECM for heat damage, chafing, corrosion, or pin pushing
- Perform a wiggle test while monitoring signal for intermittent changes
- Check for blown fuses and proper relay operation supplying the heater circuit
- Back-probe connector to check supply voltage, control signal (ECM output), and ground with key on and during commanded heater operation
Signal parameters
- Temperature sensor: NTC-type behavior — resistance decreases as temperature increases (measure with sensor cold and when warmed if safe)
- Temperature sensor voltage (back-probed): typically within 0.1–4.9 V depending on temperature and ECU pull-up — should change smoothly with temperature
- Heater power/control: likely switched battery voltage or PWM output from ECM when heater is commanded (0 V to battery voltage or PWM duty cycle)
- Compare Bank 2 sensor values to Bank 1 (if Bank 1 is known-good) to spot differences
Diagnostic algorithm
- Retrieve and record all related DTCs and freeze-frame data using a capable scan tool
- If multiple related codes exist, prioritize wiring/power/ground checks before component replacement
- Perform a careful visual inspection of the heated catalyst sensor, connector, and harness for heat damage, melted insulation, chafing, or corrosion; allow components to cool before touching
- Check fuses/relays for the heater power circuit and replace if faulty
- Back-probe the sensor connector with key ON: verify reference voltage/pull-up, sensor signal voltage, and ground presence; record values
- Command the heater ON using a diagnostic tool (if available) and observe control output and supply voltage; look for expected change (voltage or PWM)
- Disconnect the sensor and measure its resistance cold; if possible, apply controlled heat (heat gun briefly at safe distance) to confirm NTC resistance change. Do not use open flame and avoid overheating or touching hot exhaust
- Perform continuity/resistance checks between sensor connector and ECM harness pins to identify opens or shorts; check for short to ground or battery positive
- Repair any damaged wiring, connectors, or poor grounds. Replace the heated catalyst sensor/heater assembly if tests show the sensor/module is faulty.
- After repairs clear codes, perform a relearn if required, and road test to confirm the fault does not return and heater/sensor readings behave normally
- If wiring and sensor check good but fault persists, consider ECM input/driver fault and consult dealer-level diagnostics or replace ECM only after exhaustive verification
- Observe workshop safety: allow exhaust components to cool, use heat-resistant gloves, and secure vehicle on stable supports when working underneath
Likely causes
- Damaged connector or wiring chafing near the exhaust/catalyst causing intermittent open/short
- Failed temperature sensor or integrated heater/switch module on Bank 2
- Loss of supply or ground to the heater control circuit (fuse, relay, grounding strap)
- Corrosion at the sensor plug or pin making resistance/voltage readings invalid
Fault status
Status
Heated catalyst heater power switch temperature sensor electrical fault detected on Bank 2. Circuit open/short or invalid signal — heater function may be disabled. Inspect sensor, connector, supply, ground, and wiring to ECM.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
P1460
HUMMER
P — Powertrain
Cooling Fan Control System
Views:
UK: 23
EN: 33
RU: 21
AI status
Completed
Completed
100%
Causes
- Open or short in wiring harness to the heated catalyst temperature sensor (Bank 2)
- Corroded, loose, or damaged connector/pins at the sensor or ECM
- Failed heated catalyst temperature sensor module or integrated switch/heater assembly
- Blown fuse or loss of power to the heater power switch circuit
- Poor or missing ground connection for the heater/sensor circuit
- Heat damage from exhaust, road debris, or previous repairs
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated/engine light on
- Possible limp-home behavior or reduced engine performance in some vehicles
- Heated catalyst/heater may fail to operate (increasing emissions)
- Failed emissions/inspection test (catalyst/heater related)
- Diagnostic trouble codes stored for heated catalyst/heater or related oxygen/catalyst circuits
What to check
- Use a scan tool: read stored codes, pending codes, and freeze-frame data; note related codes and readiness status
- Monitor live data for the heated catalyst temperature sensor and heater status for Bank 2; compare with Bank 1
- Visually inspect harness and connectors at the heated catalyst sensor and along routing to ECM for heat damage, chafing, corrosion, or pin pushing
- Perform a wiggle test while monitoring signal for intermittent changes
- Check for blown fuses and proper relay operation supplying the heater circuit
- Back-probe connector to check supply voltage, control signal (ECM output), and ground with key on and during commanded heater operation
Signal parameters
- Temperature sensor: NTC-type behavior — resistance decreases as temperature increases (measure with sensor cold and when warmed if safe)
- Temperature sensor voltage (back-probed): typically within 0.1–4.9 V depending on temperature and ECU pull-up — should change smoothly with temperature
- Heater power/control: likely switched battery voltage or PWM output from ECM when heater is commanded (0 V to battery voltage or PWM duty cycle)
- Compare Bank 2 sensor values to Bank 1 (if Bank 1 is known-good) to spot differences
Diagnostic algorithm
- Retrieve and record all related DTCs and freeze-frame data using a capable scan tool
- If multiple related codes exist, prioritize wiring/power/ground checks before component replacement
- Perform a careful visual inspection of the heated catalyst sensor, connector, and harness for heat damage, melted insulation, chafing, or corrosion; allow components to cool before touching
- Check fuses/relays for the heater power circuit and replace if faulty
- Back-probe the sensor connector with key ON: verify reference voltage/pull-up, sensor signal voltage, and ground presence; record values
- Command the heater ON using a diagnostic tool (if available) and observe control output and supply voltage; look for expected change (voltage or PWM)
- Disconnect the sensor and measure its resistance cold; if possible, apply controlled heat (heat gun briefly at safe distance) to confirm NTC resistance change. Do not use open flame and avoid overheating or touching hot exhaust
- Perform continuity/resistance checks between sensor connector and ECM harness pins to identify opens or shorts; check for short to ground or battery positive
- Repair any damaged wiring, connectors, or poor grounds. Replace the heated catalyst sensor/heater assembly if tests show the sensor/module is faulty.
- After repairs clear codes, perform a relearn if required, and road test to confirm the fault does not return and heater/sensor readings behave normally
- If wiring and sensor check good but fault persists, consider ECM input/driver fault and consult dealer-level diagnostics or replace ECM only after exhaustive verification
- Observe workshop safety: allow exhaust components to cool, use heat-resistant gloves, and secure vehicle on stable supports when working underneath
Likely causes
- Damaged connector or wiring chafing near the exhaust/catalyst causing intermittent open/short
- Failed temperature sensor or integrated heater/switch module on Bank 2
- Loss of supply or ground to the heater control circuit (fuse, relay, grounding strap)
- Corrosion at the sensor plug or pin making resistance/voltage readings invalid
Fault status
Status
Heated catalyst heater power switch temperature sensor electrical fault detected on Bank 2. Circuit open/short or invalid signal — heater function may be disabled. Inspect sensor, connector, supply, ground, and wiring to ECM.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
Repair manuals
Manual library for HUMMER
138
Browse 138 HUMMER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.
HUMMER
-
HUMMER: 2009
-
HUMMER: 2008
-
HUMMER: 2007
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HUMMER: 2005
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HUMMER: 2004
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HUMMER: 2000
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HUMMER: 1999
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HUMMER: 1994
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HUMMER: 1993
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Code
P1460
LAND ROVER
P — Powertrain
Circuit failure in interruption of the air conditioning with the accelerator open
Views:
UK: 19
EN: 28
RU: 14
AI status
Completed
Completed
100%
Causes
- Open or short in wiring harness to the heated catalyst temperature sensor (Bank 2)
- Corroded, loose, or damaged connector/pins at the sensor or ECM
- Failed heated catalyst temperature sensor module or integrated switch/heater assembly
- Blown fuse or loss of power to the heater power switch circuit
- Poor or missing ground connection for the heater/sensor circuit
- Heat damage from exhaust, road debris, or previous repairs
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated/engine light on
- Possible limp-home behavior or reduced engine performance in some vehicles
- Heated catalyst/heater may fail to operate (increasing emissions)
- Failed emissions/inspection test (catalyst/heater related)
- Diagnostic trouble codes stored for heated catalyst/heater or related oxygen/catalyst circuits
What to check
- Use a scan tool: read stored codes, pending codes, and freeze-frame data; note related codes and readiness status
- Monitor live data for the heated catalyst temperature sensor and heater status for Bank 2; compare with Bank 1
- Visually inspect harness and connectors at the heated catalyst sensor and along routing to ECM for heat damage, chafing, corrosion, or pin pushing
- Perform a wiggle test while monitoring signal for intermittent changes
- Check for blown fuses and proper relay operation supplying the heater circuit
- Back-probe connector to check supply voltage, control signal (ECM output), and ground with key on and during commanded heater operation
Signal parameters
- Temperature sensor: NTC-type behavior — resistance decreases as temperature increases (measure with sensor cold and when warmed if safe)
- Temperature sensor voltage (back-probed): typically within 0.1–4.9 V depending on temperature and ECU pull-up — should change smoothly with temperature
- Heater power/control: likely switched battery voltage or PWM output from ECM when heater is commanded (0 V to battery voltage or PWM duty cycle)
- Compare Bank 2 sensor values to Bank 1 (if Bank 1 is known-good) to spot differences
Diagnostic algorithm
- Retrieve and record all related DTCs and freeze-frame data using a capable scan tool
- If multiple related codes exist, prioritize wiring/power/ground checks before component replacement
- Perform a careful visual inspection of the heated catalyst sensor, connector, and harness for heat damage, melted insulation, chafing, or corrosion; allow components to cool before touching
- Check fuses/relays for the heater power circuit and replace if faulty
- Back-probe the sensor connector with key ON: verify reference voltage/pull-up, sensor signal voltage, and ground presence; record values
- Command the heater ON using a diagnostic tool (if available) and observe control output and supply voltage; look for expected change (voltage or PWM)
- Disconnect the sensor and measure its resistance cold; if possible, apply controlled heat (heat gun briefly at safe distance) to confirm NTC resistance change. Do not use open flame and avoid overheating or touching hot exhaust
- Perform continuity/resistance checks between sensor connector and ECM harness pins to identify opens or shorts; check for short to ground or battery positive
- Repair any damaged wiring, connectors, or poor grounds. Replace the heated catalyst sensor/heater assembly if tests show the sensor/module is faulty.
- After repairs clear codes, perform a relearn if required, and road test to confirm the fault does not return and heater/sensor readings behave normally
- If wiring and sensor check good but fault persists, consider ECM input/driver fault and consult dealer-level diagnostics or replace ECM only after exhaustive verification
- Observe workshop safety: allow exhaust components to cool, use heat-resistant gloves, and secure vehicle on stable supports when working underneath
Likely causes
- Damaged connector or wiring chafing near the exhaust/catalyst causing intermittent open/short
- Failed temperature sensor or integrated heater/switch module on Bank 2
- Loss of supply or ground to the heater control circuit (fuse, relay, grounding strap)
- Corrosion at the sensor plug or pin making resistance/voltage readings invalid
Fault status
Status
Heated catalyst heater power switch temperature sensor electrical fault detected on Bank 2. Circuit open/short or invalid signal — heater function may be disabled. Inspect sensor, connector, supply, ground, and wiring to ECM.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
Repair manuals
Manual library for LAND ROVER
320
Browse 320 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.
LAND ROVER
-
LAND ROVER: 2022
-
Defender
- 90
- 90
- 90 S
- 90 S
- 90 V8
- 90 V8
- 90 V8 Carpathian Edition
- 90 V8 Carpathian Edition
- 90 X
- 90 X
- 90 X-Dynamic HSE
- 90 X-Dynamic HSE
- 90 X-Dynamic S
- 90 X-Dynamic S
- 90 X-Dynamic SE
- 90 X-Dynamic SE
- 110
- 110
- 110 S
- 110 S
- 110 SE
- 110 SE
- 110 V8
- 110 V8
- 110 V8 Carpathian Edition
- 110 V8 Carpathian Edition
- 110 X
- 110 X
- 110 X-Dynamic SE
- 110 X-Dynamic SE
- 110 XS Edition
- 110 XS Edition
-
Discovery
- R-Dynamic HSE
- R-Dynamic HSE
- R-Dynamic S, 2.0L Eng VIN X · 2.0L Eng VIN X2022: Discovery R-Dynamic S
- R-Dynamic S, 2.0L Eng VIN X · 2.0L Eng VIN X2022: Discovery R-Dynamic S
- R-Dynamic S, 3.0L Eng VIN U · 3.0L Eng VIN U2022: Discovery R-Dynamic S
- R-Dynamic S, 3.0L Eng VIN U · 3.0L Eng VIN U2022: Discovery R-Dynamic S
- S
- S
-
Discovery Sport
-
Range Rover
- Autobiography, 4.4L Eng VIN 7 · 4.4L Eng VIN 72022: Range Rover Autobiography
- Autobiography, 4.4L Eng VIN 7 · 4.4L Eng VIN 72022: Range Rover Autobiography
- Autobiography, 5.0L Eng VIN E · 5.0L Eng VIN E2022: Range Rover Autobiography
- Autobiography, 5.0L Eng VIN E · 5.0L Eng VIN E2022: Range Rover Autobiography
- 2022 Range Rover Base
- 2022 Range Rover Base
- First Edition
- First Edition
- HSE Westminster, 3.0L Eng VIN U · 3.0L Eng VIN U2022: Range Rover HSE Westminster
- HSE Westminster, 3.0L Eng VIN U · 3.0L Eng VIN U2022: Range Rover HSE Westminster
- HSE Westminster, 5.0L Eng VIN E · 5.0L Eng VIN E2022: Range Rover HSE Westminster
- HSE Westminster, 5.0L Eng VIN E · 5.0L Eng VIN E2022: Range Rover HSE Westminster
- SE, 3.0L Eng VIN U · 3.0L Eng VIN U2022: Range Rover SE
- SE, 3.0L Eng VIN U · 3.0L Eng VIN U2022: Range Rover SE
- SE, 4.4L Eng VIN 7 · 4.4L Eng VIN 72022: Range Rover SE
- SE, 4.4L Eng VIN 7 · 4.4L Eng VIN 72022: Range Rover SE
- SV
- SV
- SVAutobiography
- SVAutobiography
- SVAutobiography Dynamic
- SVAutobiography Dynamic
- SVAutobiography Dynamic Blk.
- SVAutobiography Dynamic Blk.
-
Range Rover Evoque
-
Range Rover Velar
- R-Dynamic HSE
- R-Dynamic HSE
- R-Dynamic S, 2.0L Eng VIN X · 2.0L Eng VIN X2022: Range Rover Velar R-Dynamic S
- R-Dynamic S, 2.0L Eng VIN X · 2.0L Eng VIN X2022: Range Rover Velar R-Dynamic S
- R-Dynamic S, 3.0L Eng VIN U · 3.0L Eng VIN U2022: Range Rover Velar R-Dynamic S
- R-Dynamic S, 3.0L Eng VIN U · 3.0L Eng VIN U2022: Range Rover Velar R-Dynamic S
- S, 2.0L Eng VIN X · 2.0L Eng VIN X2022: Range Rover Velar S
- S, 2.0L Eng VIN X · 2.0L Eng VIN X2022: Range Rover Velar S
- S, 3.0L Eng VIN U · 3.0L Eng VIN U2022: Range Rover Velar S
- S, 3.0L Eng VIN U · 3.0L Eng VIN U2022: Range Rover Velar S
-
-
LAND ROVER: 2021
-
Discovery
- R-Dynamic HSE
- R-Dynamic HSE
- R-Dynamic S, 2.0L Eng VIN X · 2.0L Eng VIN X2021: Discovery R-Dynamic S
- R-Dynamic S, 2.0L Eng VIN X · 2.0L Eng VIN X2021: Discovery R-Dynamic S
- R-Dynamic S, 3.0L Eng VIN U · 3.0L Eng VIN U2021: Discovery R-Dynamic S
- R-Dynamic S, 3.0L Eng VIN U · 3.0L Eng VIN U2021: Discovery R-Dynamic S
- S
- S
-
Discovery Sport
-
Range Rover
- Autobiography, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover Autobiography
- Autobiography, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover Autobiography
- Autobiography Fifty Edition
- Autobiography Fifty Edition
- 2021 Range Rover Base
- 2021 Range Rover Base
- HSE, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover HSE
- HSE, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover HSE
- HSE, 3.0L Eng VIN K · 3.0L Eng VIN K2021: Range Rover HSE
- HSE, 3.0L Eng VIN K · 3.0L Eng VIN K2021: Range Rover HSE
- HSE Westminster, 3.0L Eng VIN U · 3.0L Eng VIN U2021: Range Rover HSE Westminster
- HSE Westminster, 3.0L Eng VIN U · 3.0L Eng VIN U2021: Range Rover HSE Westminster
- HSE Westminster, 5.0L Eng VIN E · 5.0L Eng VIN E2021: Range Rover HSE Westminster
- HSE Westminster, 5.0L Eng VIN E · 5.0L Eng VIN E2021: Range Rover HSE Westminster
- SVAutobiography
- SVAutobiography
- SVAutobiography Dynamic
- SVAutobiography Dynamic
- SVAutobiography Dynamic Blk.
- SVAutobiography Dynamic Blk.
-
Range Rover Evoque
-
Range Rover Sport
- Autobiography, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover Sport Autobiography
- Autobiography, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover Sport Autobiography
- Autobiography, 5.0L Eng VIN E · 5.0L Eng VIN E2021: Range Rover Sport Autobiography
- Autobiography, 5.0L Eng VIN E · 5.0L Eng VIN E2021: Range Rover Sport Autobiography
- Autobiography Dynamic, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover Sport Autobiography Dynamic
- Autobiography Dynamic, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover Sport Autobiography Dynamic
- Autobiography Dynamic, 5.0L Eng VIN E · 5.0L Eng VIN E2021: Range Rover Sport Autobiography Dynamic
- Autobiography Dynamic, 5.0L Eng VIN E · 5.0L Eng VIN E2021: Range Rover Sport Autobiography Dynamic
- HSE Dynamic
- HSE Dynamic
- HSE Silver Edition, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover Sport HSE Silver Edition
- HSE Silver Edition, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover Sport HSE Silver Edition
- HSE Silver Edition, 3.0L Eng VIN K · 3.0L Eng VIN K2021: Range Rover Sport HSE Silver Edition
- HSE Silver Edition, 3.0L Eng VIN K · 3.0L Eng VIN K2021: Range Rover Sport HSE Silver Edition
- HSE Silver Edition, 3.0L Eng VIN U · 3.0L Eng VIN U2021: Range Rover Sport HSE Silver Edition
- HSE Silver Edition, 3.0L Eng VIN U · 3.0L Eng VIN U2021: Range Rover Sport HSE Silver Edition
- HST
- HST
- SE
- SE
- SVR
- SVR
- SVR Carbon Edition
- SVR Carbon Edition
-
Range Rover Velar
- R-Dynamic HSE
- R-Dynamic HSE
- R-Dynamic S, 2.0L Eng VIN X · 2.0L Eng VIN X2021: Range Rover Velar R-Dynamic S
- R-Dynamic S, 2.0L Eng VIN X · 2.0L Eng VIN X2021: Range Rover Velar R-Dynamic S
- R-Dynamic S, 3.0L Eng VIN U · 3.0L Eng VIN U2021: Range Rover Velar R-Dynamic S
- R-Dynamic S, 3.0L Eng VIN U · 3.0L Eng VIN U2021: Range Rover Velar R-Dynamic S
- S, 2.0L Eng VIN X · 2.0L Eng VIN X2021: Range Rover Velar S
- S, 2.0L Eng VIN X · 2.0L Eng VIN X2021: Range Rover Velar S
- S, 3.0L Eng VIN U · 3.0L Eng VIN U2021: Range Rover Velar S
- S, 3.0L Eng VIN U · 3.0L Eng VIN U2021: Range Rover Velar S
-
LAND ROVER: 2020
-
Defender
- 90 First Edition
- 90 First Edition
- 110 First Edition
- 110 First Edition
- 110 HSE
- 110 HSE
- 110 S
- 110 S
- 110 SE
- 110 SE
- 110 X
- 110 X
- 110, 2.0L Eng VIN X · 2.0L Eng VIN X2020: Defender 110
- 110, 2.0L Eng VIN X · 2.0L Eng VIN X2020: Defender 110
- 110, 3.0L Eng VIN U · 3.0L Eng VIN U2020: Defender 110
- 110, 3.0L Eng VIN U · 3.0L Eng VIN U2020: Defender 110
-
Discovery
- HSE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Discovery HSE
- HSE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Discovery HSE
- HSE, 3.0L Eng VIN V · 3.0L Eng VIN V2020: Discovery HSE
- HSE, 3.0L Eng VIN V · 3.0L Eng VIN V2020: Discovery HSE
- HSE Luxury, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Discovery HSE Luxury
- HSE Luxury, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Discovery HSE Luxury
- HSE Luxury, 3.0L Eng VIN V · 3.0L Eng VIN V2020: Discovery HSE Luxury
- HSE Luxury, 3.0L Eng VIN V · 3.0L Eng VIN V2020: Discovery HSE Luxury
- Landmark
- Landmark
- SE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Discovery SE
- SE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Discovery SE
- SE, 3.0L Eng VIN V · 3.0L Eng VIN V2020: Discovery SE
- SE, 3.0L Eng VIN V · 3.0L Eng VIN V2020: Discovery SE
-
Range Rover
- Autobiography
- Autobiography
- Base, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Range Rover Base
- Base, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Range Rover Base
- Base, 3.0L Eng VIN U · 3.0L Eng VIN U2020: Range Rover Base
- Base, 3.0L Eng VIN U · 3.0L Eng VIN U2020: Range Rover Base
- HSE, 2.0L Eng VIN Y · 2.0L Eng VIN Y2020: Range Rover HSE
- HSE, 2.0L Eng VIN Y · 2.0L Eng VIN Y2020: Range Rover HSE
- HSE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Range Rover HSE
- HSE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Range Rover HSE
- HSE, 3.0L Eng VIN U · 3.0L Eng VIN U2020: Range Rover HSE
- HSE, 3.0L Eng VIN U · 3.0L Eng VIN U2020: Range Rover HSE
- HSE, 5.0L Eng VIN E · 5.0L Eng VIN E2020: Range Rover HSE
- HSE, 5.0L Eng VIN E · 5.0L Eng VIN E2020: Range Rover HSE
- SVAutobiography
- SVAutobiography
- SVAutobiography Dynamic
- SVAutobiography Dynamic
-
Range Rover Evoque
-
Range Rover Sport
- Autobiography Dynamic, 2.0L Eng VIN Y · 2.0L Eng VIN Y2020: Range Rover Sport Autobiography Dynamic
- Autobiography Dynamic, 2.0L Eng VIN Y · 2.0L Eng VIN Y2020: Range Rover Sport Autobiography Dynamic
- Autobiography Dynamic, 5.0L Eng VIN E · 5.0L Eng VIN E2020: Range Rover Sport Autobiography Dynamic
- Autobiography Dynamic, 5.0L Eng VIN E · 5.0L Eng VIN E2020: Range Rover Sport Autobiography Dynamic
- HSE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Range Rover Sport HSE
- HSE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Range Rover Sport HSE
- HSE, 3.0L Eng VIN U · 3.0L Eng VIN U2020: Range Rover Sport HSE
- HSE, 3.0L Eng VIN U · 3.0L Eng VIN U2020: Range Rover Sport HSE
- HSE, 5.0L Eng VIN E · 5.0L Eng VIN E2020: Range Rover Sport HSE
- HSE, 5.0L Eng VIN E · 5.0L Eng VIN E2020: Range Rover Sport HSE
- HSE Dynamic
- HSE Dynamic
- HSE PHEV
- HSE PHEV
- HST
- HST
- SE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Range Rover Sport SE
- SE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Range Rover Sport SE
- SE, 3.0L Eng VIN U · 3.0L Eng VIN U2020: Range Rover Sport SE
- SE, 3.0L Eng VIN U · 3.0L Eng VIN U2020: Range Rover Sport SE
- SVR
- SVR
-
Range Rover Velar
- R-Dynamic HSE
- R-Dynamic HSE
- R-Dynamic S, 2.0L Eng VIN X · 2.0L Eng VIN X2020: Range Rover Velar R-Dynamic S
- R-Dynamic S, 2.0L Eng VIN X · 2.0L Eng VIN X2020: Range Rover Velar R-Dynamic S
- R-Dynamic S, 3.0L Eng VIN V · 3.0L Eng VIN V2020: Range Rover Velar R-Dynamic S
- R-Dynamic S, 3.0L Eng VIN V · 3.0L Eng VIN V2020: Range Rover Velar R-Dynamic S
- S, 2.0L Eng VIN X · 2.0L Eng VIN X2020: Range Rover Velar S
- S, 2.0L Eng VIN X · 2.0L Eng VIN X2020: Range Rover Velar S
- S, 3.0L Eng VIN V · 3.0L Eng VIN V2020: Range Rover Velar S
- S, 3.0L Eng VIN V · 3.0L Eng VIN V2020: Range Rover Velar S
- SVAutobiography Dyn.
- SVAutobiography Dyn.
-
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Code
P1460
LINCOLN
P — Powertrain
Wide Open Throttle Air Conditioning Cutoff Circuit Malfunction
Views:
UK: 35
EN: 71
RU: 30
AI status
Completed
Completed
100%
Causes
- Open or short in wiring harness to the heated catalyst temperature sensor (Bank 2)
- Corroded, loose, or damaged connector/pins at the sensor or ECM
- Failed heated catalyst temperature sensor module or integrated switch/heater assembly
- Blown fuse or loss of power to the heater power switch circuit
- Poor or missing ground connection for the heater/sensor circuit
- Heat damage from exhaust, road debris, or previous repairs
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated/engine light on
- Possible limp-home behavior or reduced engine performance in some vehicles
- Heated catalyst/heater may fail to operate (increasing emissions)
- Failed emissions/inspection test (catalyst/heater related)
- Diagnostic trouble codes stored for heated catalyst/heater or related oxygen/catalyst circuits
What to check
- Use a scan tool: read stored codes, pending codes, and freeze-frame data; note related codes and readiness status
- Monitor live data for the heated catalyst temperature sensor and heater status for Bank 2; compare with Bank 1
- Visually inspect harness and connectors at the heated catalyst sensor and along routing to ECM for heat damage, chafing, corrosion, or pin pushing
- Perform a wiggle test while monitoring signal for intermittent changes
- Check for blown fuses and proper relay operation supplying the heater circuit
- Back-probe connector to check supply voltage, control signal (ECM output), and ground with key on and during commanded heater operation
Signal parameters
- Temperature sensor: NTC-type behavior — resistance decreases as temperature increases (measure with sensor cold and when warmed if safe)
- Temperature sensor voltage (back-probed): typically within 0.1–4.9 V depending on temperature and ECU pull-up — should change smoothly with temperature
- Heater power/control: likely switched battery voltage or PWM output from ECM when heater is commanded (0 V to battery voltage or PWM duty cycle)
- Compare Bank 2 sensor values to Bank 1 (if Bank 1 is known-good) to spot differences
Diagnostic algorithm
- Retrieve and record all related DTCs and freeze-frame data using a capable scan tool
- If multiple related codes exist, prioritize wiring/power/ground checks before component replacement
- Perform a careful visual inspection of the heated catalyst sensor, connector, and harness for heat damage, melted insulation, chafing, or corrosion; allow components to cool before touching
- Check fuses/relays for the heater power circuit and replace if faulty
- Back-probe the sensor connector with key ON: verify reference voltage/pull-up, sensor signal voltage, and ground presence; record values
- Command the heater ON using a diagnostic tool (if available) and observe control output and supply voltage; look for expected change (voltage or PWM)
- Disconnect the sensor and measure its resistance cold; if possible, apply controlled heat (heat gun briefly at safe distance) to confirm NTC resistance change. Do not use open flame and avoid overheating or touching hot exhaust
- Perform continuity/resistance checks between sensor connector and ECM harness pins to identify opens or shorts; check for short to ground or battery positive
- Repair any damaged wiring, connectors, or poor grounds. Replace the heated catalyst sensor/heater assembly if tests show the sensor/module is faulty.
- After repairs clear codes, perform a relearn if required, and road test to confirm the fault does not return and heater/sensor readings behave normally
- If wiring and sensor check good but fault persists, consider ECM input/driver fault and consult dealer-level diagnostics or replace ECM only after exhaustive verification
- Observe workshop safety: allow exhaust components to cool, use heat-resistant gloves, and secure vehicle on stable supports when working underneath
Likely causes
- Damaged connector or wiring chafing near the exhaust/catalyst causing intermittent open/short
- Failed temperature sensor or integrated heater/switch module on Bank 2
- Loss of supply or ground to the heater control circuit (fuse, relay, grounding strap)
- Corrosion at the sensor plug or pin making resistance/voltage readings invalid
Fault status
Status
Heated catalyst heater power switch temperature sensor electrical fault detected on Bank 2. Circuit open/short or invalid signal — heater function may be disabled. Inspect sensor, connector, supply, ground, and wiring to ECM.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
Repair manuals
Manual library for LINCOLN
166
Browse 166 LINCOLN manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.
LINCOLN
-
LINCOLN: 2024
-
LINCOLN: 2023
-
LINCOLN: 2022
-
LINCOLN: 2021
-
LINCOLN: 2020
-
Continental
- Base, AWD
- Base, FWD
- Black Label, 2.7L Eng VIN P · 2.7L Eng VIN P2020: Continental Black Label
- Black Label, 3.0L Eng VIN C · 3.0L Eng VIN C2020: Continental Black Label
- Livery, AWD
- Livery, FWD
- Reserve, 2.7L Eng VIN P, AWD
- Reserve, 2.7L Eng VIN P, FWD
- Reserve, 3.0L Eng VIN C · 3.0L Eng VIN C2020: Continental Reserve
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Code
P1460
MERCURY
P — Powertrain
Wide Open Throttle Air Conditioning Cutoff Circuit Malfunction
Views:
UK: 33
EN: 74
RU: 36
AI status
Completed
Completed
100%
Causes
- Open or short in wiring harness to the heated catalyst temperature sensor (Bank 2)
- Corroded, loose, or damaged connector/pins at the sensor or ECM
- Failed heated catalyst temperature sensor module or integrated switch/heater assembly
- Blown fuse or loss of power to the heater power switch circuit
- Poor or missing ground connection for the heater/sensor circuit
- Heat damage from exhaust, road debris, or previous repairs
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated/engine light on
- Possible limp-home behavior or reduced engine performance in some vehicles
- Heated catalyst/heater may fail to operate (increasing emissions)
- Failed emissions/inspection test (catalyst/heater related)
- Diagnostic trouble codes stored for heated catalyst/heater or related oxygen/catalyst circuits
What to check
- Use a scan tool: read stored codes, pending codes, and freeze-frame data; note related codes and readiness status
- Monitor live data for the heated catalyst temperature sensor and heater status for Bank 2; compare with Bank 1
- Visually inspect harness and connectors at the heated catalyst sensor and along routing to ECM for heat damage, chafing, corrosion, or pin pushing
- Perform a wiggle test while monitoring signal for intermittent changes
- Check for blown fuses and proper relay operation supplying the heater circuit
- Back-probe connector to check supply voltage, control signal (ECM output), and ground with key on and during commanded heater operation
Signal parameters
- Temperature sensor: NTC-type behavior — resistance decreases as temperature increases (measure with sensor cold and when warmed if safe)
- Temperature sensor voltage (back-probed): typically within 0.1–4.9 V depending on temperature and ECU pull-up — should change smoothly with temperature
- Heater power/control: likely switched battery voltage or PWM output from ECM when heater is commanded (0 V to battery voltage or PWM duty cycle)
- Compare Bank 2 sensor values to Bank 1 (if Bank 1 is known-good) to spot differences
Diagnostic algorithm
- Retrieve and record all related DTCs and freeze-frame data using a capable scan tool
- If multiple related codes exist, prioritize wiring/power/ground checks before component replacement
- Perform a careful visual inspection of the heated catalyst sensor, connector, and harness for heat damage, melted insulation, chafing, or corrosion; allow components to cool before touching
- Check fuses/relays for the heater power circuit and replace if faulty
- Back-probe the sensor connector with key ON: verify reference voltage/pull-up, sensor signal voltage, and ground presence; record values
- Command the heater ON using a diagnostic tool (if available) and observe control output and supply voltage; look for expected change (voltage or PWM)
- Disconnect the sensor and measure its resistance cold; if possible, apply controlled heat (heat gun briefly at safe distance) to confirm NTC resistance change. Do not use open flame and avoid overheating or touching hot exhaust
- Perform continuity/resistance checks between sensor connector and ECM harness pins to identify opens or shorts; check for short to ground or battery positive
- Repair any damaged wiring, connectors, or poor grounds. Replace the heated catalyst sensor/heater assembly if tests show the sensor/module is faulty.
- After repairs clear codes, perform a relearn if required, and road test to confirm the fault does not return and heater/sensor readings behave normally
- If wiring and sensor check good but fault persists, consider ECM input/driver fault and consult dealer-level diagnostics or replace ECM only after exhaustive verification
- Observe workshop safety: allow exhaust components to cool, use heat-resistant gloves, and secure vehicle on stable supports when working underneath
Likely causes
- Damaged connector or wiring chafing near the exhaust/catalyst causing intermittent open/short
- Failed temperature sensor or integrated heater/switch module on Bank 2
- Loss of supply or ground to the heater control circuit (fuse, relay, grounding strap)
- Corrosion at the sensor plug or pin making resistance/voltage readings invalid
Fault status
Status
Heated catalyst heater power switch temperature sensor electrical fault detected on Bank 2. Circuit open/short or invalid signal — heater function may be disabled. Inspect sensor, connector, supply, ground, and wiring to ECM.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
Repair manuals
Manual library for MERCURY
296
Browse 296 MERCURY manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.
MERCURY
-
MERCURY: 2011
-
MERCURY: 2010
-
Mountaineer
-
MERCURY: 2009
-
Mountaineer
-
MERCURY: 2008
-
Mountaineer
-
MERCURY: 2007
-
Montego
-
Monterey
-
Mountaineer
-
MERCURY: 2006
-
Montego
-
Monterey
-
Mountaineer
-
MERCURY: 2005
-
Grand Marquis
-
Mariner
-
Montego
-
Monterey
-
Mountaineer
-
-
MERCURY: 2004
-
Marauder
-
Monterey
-
Mountaineer
-
MERCURY: 2003
-
Marauder
-
Mountaineer
-
MERCURY: 2002
-
Cougar
-
Mountaineer
-
Sable
-
Villager
-
-
MERCURY: 2001
-
Mountaineer
-
Sable
- GS, 4D Sedan, 3.0 2, 4F50N
- GS, 4D Sedan, 3.0 2, AX4S
- GS, 4D Sedan, 3.0 S
- GS, 4D Sedan, 3.0 U, 4F50N
- GS, 4D Sedan, 3.0 U, AX4S
- GS, 4D Wagon, 3.0 2, 4F50N
- GS, 4D Wagon, 3.0 2, AX4S
- GS, 4D Wagon, 3.0 U, 4F50N
- GS, 4D Wagon, 3.0 U, AX4S
- LS, 4D Sedan, 3.0 2
- LS, 4D Sedan, 3.0 S
- LS, 4D Sedan, 3.0 U, 4F50N
- LS, 4D Sedan, 3.0 U, AX4S
- LS, 4D Wagon, 3.0 S
- LS, 4D Wagon, 3.0 U, 4F50N
- LS, 4D Wagon, 3.0 U, AX4S
-
Villager
-
MERCURY: 2000
-
Cougar
-
Mountaineer
-
Villager
-
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Code
P1460
OLDSMOBILE
P — Powertrain
Cooling Fan Control System
Views:
UK: 30
EN: 55
RU: 24
AI status
Completed
Completed
100%
Causes
- Open or short in wiring harness to the heated catalyst temperature sensor (Bank 2)
- Corroded, loose, or damaged connector/pins at the sensor or ECM
- Failed heated catalyst temperature sensor module or integrated switch/heater assembly
- Blown fuse or loss of power to the heater power switch circuit
- Poor or missing ground connection for the heater/sensor circuit
- Heat damage from exhaust, road debris, or previous repairs
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated/engine light on
- Possible limp-home behavior or reduced engine performance in some vehicles
- Heated catalyst/heater may fail to operate (increasing emissions)
- Failed emissions/inspection test (catalyst/heater related)
- Diagnostic trouble codes stored for heated catalyst/heater or related oxygen/catalyst circuits
What to check
- Use a scan tool: read stored codes, pending codes, and freeze-frame data; note related codes and readiness status
- Monitor live data for the heated catalyst temperature sensor and heater status for Bank 2; compare with Bank 1
- Visually inspect harness and connectors at the heated catalyst sensor and along routing to ECM for heat damage, chafing, corrosion, or pin pushing
- Perform a wiggle test while monitoring signal for intermittent changes
- Check for blown fuses and proper relay operation supplying the heater circuit
- Back-probe connector to check supply voltage, control signal (ECM output), and ground with key on and during commanded heater operation
Signal parameters
- Temperature sensor: NTC-type behavior — resistance decreases as temperature increases (measure with sensor cold and when warmed if safe)
- Temperature sensor voltage (back-probed): typically within 0.1–4.9 V depending on temperature and ECU pull-up — should change smoothly with temperature
- Heater power/control: likely switched battery voltage or PWM output from ECM when heater is commanded (0 V to battery voltage or PWM duty cycle)
- Compare Bank 2 sensor values to Bank 1 (if Bank 1 is known-good) to spot differences
Diagnostic algorithm
- Retrieve and record all related DTCs and freeze-frame data using a capable scan tool
- If multiple related codes exist, prioritize wiring/power/ground checks before component replacement
- Perform a careful visual inspection of the heated catalyst sensor, connector, and harness for heat damage, melted insulation, chafing, or corrosion; allow components to cool before touching
- Check fuses/relays for the heater power circuit and replace if faulty
- Back-probe the sensor connector with key ON: verify reference voltage/pull-up, sensor signal voltage, and ground presence; record values
- Command the heater ON using a diagnostic tool (if available) and observe control output and supply voltage; look for expected change (voltage or PWM)
- Disconnect the sensor and measure its resistance cold; if possible, apply controlled heat (heat gun briefly at safe distance) to confirm NTC resistance change. Do not use open flame and avoid overheating or touching hot exhaust
- Perform continuity/resistance checks between sensor connector and ECM harness pins to identify opens or shorts; check for short to ground or battery positive
- Repair any damaged wiring, connectors, or poor grounds. Replace the heated catalyst sensor/heater assembly if tests show the sensor/module is faulty.
- After repairs clear codes, perform a relearn if required, and road test to confirm the fault does not return and heater/sensor readings behave normally
- If wiring and sensor check good but fault persists, consider ECM input/driver fault and consult dealer-level diagnostics or replace ECM only after exhaustive verification
- Observe workshop safety: allow exhaust components to cool, use heat-resistant gloves, and secure vehicle on stable supports when working underneath
Likely causes
- Damaged connector or wiring chafing near the exhaust/catalyst causing intermittent open/short
- Failed temperature sensor or integrated heater/switch module on Bank 2
- Loss of supply or ground to the heater control circuit (fuse, relay, grounding strap)
- Corrosion at the sensor plug or pin making resistance/voltage readings invalid
Fault status
Status
Heated catalyst heater power switch temperature sensor electrical fault detected on Bank 2. Circuit open/short or invalid signal — heater function may be disabled. Inspect sensor, connector, supply, ground, and wiring to ECM.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
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Code
P1460
Other
P — Powertrain
Wide open throttle A/C cutoff relay circuit
Views:
UK: 30
EN: 57
RU: 30
AI status
Completed
Completed
100%
Causes
- Open or short in wiring harness to the heated catalyst temperature sensor (Bank 2)
- Corroded, loose, or damaged connector/pins at the sensor or ECM
- Failed heated catalyst temperature sensor module or integrated switch/heater assembly
- Blown fuse or loss of power to the heater power switch circuit
- Poor or missing ground connection for the heater/sensor circuit
- Heat damage from exhaust, road debris, or previous repairs
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated/engine light on
- Possible limp-home behavior or reduced engine performance in some vehicles
- Heated catalyst/heater may fail to operate (increasing emissions)
- Failed emissions/inspection test (catalyst/heater related)
- Diagnostic trouble codes stored for heated catalyst/heater or related oxygen/catalyst circuits
What to check
- Use a scan tool: read stored codes, pending codes, and freeze-frame data; note related codes and readiness status
- Monitor live data for the heated catalyst temperature sensor and heater status for Bank 2; compare with Bank 1
- Visually inspect harness and connectors at the heated catalyst sensor and along routing to ECM for heat damage, chafing, corrosion, or pin pushing
- Perform a wiggle test while monitoring signal for intermittent changes
- Check for blown fuses and proper relay operation supplying the heater circuit
- Back-probe connector to check supply voltage, control signal (ECM output), and ground with key on and during commanded heater operation
Signal parameters
- Temperature sensor: NTC-type behavior — resistance decreases as temperature increases (measure with sensor cold and when warmed if safe)
- Temperature sensor voltage (back-probed): typically within 0.1–4.9 V depending on temperature and ECU pull-up — should change smoothly with temperature
- Heater power/control: likely switched battery voltage or PWM output from ECM when heater is commanded (0 V to battery voltage or PWM duty cycle)
- Compare Bank 2 sensor values to Bank 1 (if Bank 1 is known-good) to spot differences
Diagnostic algorithm
- Retrieve and record all related DTCs and freeze-frame data using a capable scan tool
- If multiple related codes exist, prioritize wiring/power/ground checks before component replacement
- Perform a careful visual inspection of the heated catalyst sensor, connector, and harness for heat damage, melted insulation, chafing, or corrosion; allow components to cool before touching
- Check fuses/relays for the heater power circuit and replace if faulty
- Back-probe the sensor connector with key ON: verify reference voltage/pull-up, sensor signal voltage, and ground presence; record values
- Command the heater ON using a diagnostic tool (if available) and observe control output and supply voltage; look for expected change (voltage or PWM)
- Disconnect the sensor and measure its resistance cold; if possible, apply controlled heat (heat gun briefly at safe distance) to confirm NTC resistance change. Do not use open flame and avoid overheating or touching hot exhaust
- Perform continuity/resistance checks between sensor connector and ECM harness pins to identify opens or shorts; check for short to ground or battery positive
- Repair any damaged wiring, connectors, or poor grounds. Replace the heated catalyst sensor/heater assembly if tests show the sensor/module is faulty.
- After repairs clear codes, perform a relearn if required, and road test to confirm the fault does not return and heater/sensor readings behave normally
- If wiring and sensor check good but fault persists, consider ECM input/driver fault and consult dealer-level diagnostics or replace ECM only after exhaustive verification
- Observe workshop safety: allow exhaust components to cool, use heat-resistant gloves, and secure vehicle on stable supports when working underneath
Likely causes
- Damaged connector or wiring chafing near the exhaust/catalyst causing intermittent open/short
- Failed temperature sensor or integrated heater/switch module on Bank 2
- Loss of supply or ground to the heater control circuit (fuse, relay, grounding strap)
- Corrosion at the sensor plug or pin making resistance/voltage readings invalid
Fault status
Status
Heated catalyst heater power switch temperature sensor electrical fault detected on Bank 2. Circuit open/short or invalid signal — heater function may be disabled. Inspect sensor, connector, supply, ground, and wiring to ECM.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
Repair manuals
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Code
P1460
PLYMOUTH
P — Powertrain
Cooling Fan Control System
Views:
UK: 30
EN: 56
RU: 28
AI status
Completed
Completed
100%
Causes
- Open or short in wiring harness to the heated catalyst temperature sensor (Bank 2)
- Corroded, loose, or damaged connector/pins at the sensor or ECM
- Failed heated catalyst temperature sensor module or integrated switch/heater assembly
- Blown fuse or loss of power to the heater power switch circuit
- Poor or missing ground connection for the heater/sensor circuit
- Heat damage from exhaust, road debris, or previous repairs
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated/engine light on
- Possible limp-home behavior or reduced engine performance in some vehicles
- Heated catalyst/heater may fail to operate (increasing emissions)
- Failed emissions/inspection test (catalyst/heater related)
- Diagnostic trouble codes stored for heated catalyst/heater or related oxygen/catalyst circuits
What to check
- Use a scan tool: read stored codes, pending codes, and freeze-frame data; note related codes and readiness status
- Monitor live data for the heated catalyst temperature sensor and heater status for Bank 2; compare with Bank 1
- Visually inspect harness and connectors at the heated catalyst sensor and along routing to ECM for heat damage, chafing, corrosion, or pin pushing
- Perform a wiggle test while monitoring signal for intermittent changes
- Check for blown fuses and proper relay operation supplying the heater circuit
- Back-probe connector to check supply voltage, control signal (ECM output), and ground with key on and during commanded heater operation
Signal parameters
- Temperature sensor: NTC-type behavior — resistance decreases as temperature increases (measure with sensor cold and when warmed if safe)
- Temperature sensor voltage (back-probed): typically within 0.1–4.9 V depending on temperature and ECU pull-up — should change smoothly with temperature
- Heater power/control: likely switched battery voltage or PWM output from ECM when heater is commanded (0 V to battery voltage or PWM duty cycle)
- Compare Bank 2 sensor values to Bank 1 (if Bank 1 is known-good) to spot differences
Diagnostic algorithm
- Retrieve and record all related DTCs and freeze-frame data using a capable scan tool
- If multiple related codes exist, prioritize wiring/power/ground checks before component replacement
- Perform a careful visual inspection of the heated catalyst sensor, connector, and harness for heat damage, melted insulation, chafing, or corrosion; allow components to cool before touching
- Check fuses/relays for the heater power circuit and replace if faulty
- Back-probe the sensor connector with key ON: verify reference voltage/pull-up, sensor signal voltage, and ground presence; record values
- Command the heater ON using a diagnostic tool (if available) and observe control output and supply voltage; look for expected change (voltage or PWM)
- Disconnect the sensor and measure its resistance cold; if possible, apply controlled heat (heat gun briefly at safe distance) to confirm NTC resistance change. Do not use open flame and avoid overheating or touching hot exhaust
- Perform continuity/resistance checks between sensor connector and ECM harness pins to identify opens or shorts; check for short to ground or battery positive
- Repair any damaged wiring, connectors, or poor grounds. Replace the heated catalyst sensor/heater assembly if tests show the sensor/module is faulty.
- After repairs clear codes, perform a relearn if required, and road test to confirm the fault does not return and heater/sensor readings behave normally
- If wiring and sensor check good but fault persists, consider ECM input/driver fault and consult dealer-level diagnostics or replace ECM only after exhaustive verification
- Observe workshop safety: allow exhaust components to cool, use heat-resistant gloves, and secure vehicle on stable supports when working underneath
Likely causes
- Damaged connector or wiring chafing near the exhaust/catalyst causing intermittent open/short
- Failed temperature sensor or integrated heater/switch module on Bank 2
- Loss of supply or ground to the heater control circuit (fuse, relay, grounding strap)
- Corrosion at the sensor plug or pin making resistance/voltage readings invalid
Fault status
Status
Heated catalyst heater power switch temperature sensor electrical fault detected on Bank 2. Circuit open/short or invalid signal — heater function may be disabled. Inspect sensor, connector, supply, ground, and wiring to ECM.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
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Code
P1460
PONTIAC
P — Powertrain
Cooling Fan Control System
Views:
UK: 29
EN: 53
RU: 26
AI status
Completed
Completed
100%
Causes
- Open or short in wiring harness to the heated catalyst temperature sensor (Bank 2)
- Corroded, loose, or damaged connector/pins at the sensor or ECM
- Failed heated catalyst temperature sensor module or integrated switch/heater assembly
- Blown fuse or loss of power to the heater power switch circuit
- Poor or missing ground connection for the heater/sensor circuit
- Heat damage from exhaust, road debris, or previous repairs
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated/engine light on
- Possible limp-home behavior or reduced engine performance in some vehicles
- Heated catalyst/heater may fail to operate (increasing emissions)
- Failed emissions/inspection test (catalyst/heater related)
- Diagnostic trouble codes stored for heated catalyst/heater or related oxygen/catalyst circuits
What to check
- Use a scan tool: read stored codes, pending codes, and freeze-frame data; note related codes and readiness status
- Monitor live data for the heated catalyst temperature sensor and heater status for Bank 2; compare with Bank 1
- Visually inspect harness and connectors at the heated catalyst sensor and along routing to ECM for heat damage, chafing, corrosion, or pin pushing
- Perform a wiggle test while monitoring signal for intermittent changes
- Check for blown fuses and proper relay operation supplying the heater circuit
- Back-probe connector to check supply voltage, control signal (ECM output), and ground with key on and during commanded heater operation
Signal parameters
- Temperature sensor: NTC-type behavior — resistance decreases as temperature increases (measure with sensor cold and when warmed if safe)
- Temperature sensor voltage (back-probed): typically within 0.1–4.9 V depending on temperature and ECU pull-up — should change smoothly with temperature
- Heater power/control: likely switched battery voltage or PWM output from ECM when heater is commanded (0 V to battery voltage or PWM duty cycle)
- Compare Bank 2 sensor values to Bank 1 (if Bank 1 is known-good) to spot differences
Diagnostic algorithm
- Retrieve and record all related DTCs and freeze-frame data using a capable scan tool
- If multiple related codes exist, prioritize wiring/power/ground checks before component replacement
- Perform a careful visual inspection of the heated catalyst sensor, connector, and harness for heat damage, melted insulation, chafing, or corrosion; allow components to cool before touching
- Check fuses/relays for the heater power circuit and replace if faulty
- Back-probe the sensor connector with key ON: verify reference voltage/pull-up, sensor signal voltage, and ground presence; record values
- Command the heater ON using a diagnostic tool (if available) and observe control output and supply voltage; look for expected change (voltage or PWM)
- Disconnect the sensor and measure its resistance cold; if possible, apply controlled heat (heat gun briefly at safe distance) to confirm NTC resistance change. Do not use open flame and avoid overheating or touching hot exhaust
- Perform continuity/resistance checks between sensor connector and ECM harness pins to identify opens or shorts; check for short to ground or battery positive
- Repair any damaged wiring, connectors, or poor grounds. Replace the heated catalyst sensor/heater assembly if tests show the sensor/module is faulty.
- After repairs clear codes, perform a relearn if required, and road test to confirm the fault does not return and heater/sensor readings behave normally
- If wiring and sensor check good but fault persists, consider ECM input/driver fault and consult dealer-level diagnostics or replace ECM only after exhaustive verification
- Observe workshop safety: allow exhaust components to cool, use heat-resistant gloves, and secure vehicle on stable supports when working underneath
Likely causes
- Damaged connector or wiring chafing near the exhaust/catalyst causing intermittent open/short
- Failed temperature sensor or integrated heater/switch module on Bank 2
- Loss of supply or ground to the heater control circuit (fuse, relay, grounding strap)
- Corrosion at the sensor plug or pin making resistance/voltage readings invalid
Fault status
Status
Heated catalyst heater power switch temperature sensor electrical fault detected on Bank 2. Circuit open/short or invalid signal — heater function may be disabled. Inspect sensor, connector, supply, ground, and wiring to ECM.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
P1460
SAAB
P — Powertrain
Immobilizer Active
Views:
UK: 24
EN: 26
RU: 20
AI status
Completed
Completed
100%
Causes
- Open or short in wiring harness to the heated catalyst temperature sensor (Bank 2)
- Corroded, loose, or damaged connector/pins at the sensor or ECM
- Failed heated catalyst temperature sensor module or integrated switch/heater assembly
- Blown fuse or loss of power to the heater power switch circuit
- Poor or missing ground connection for the heater/sensor circuit
- Heat damage from exhaust, road debris, or previous repairs
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated/engine light on
- Possible limp-home behavior or reduced engine performance in some vehicles
- Heated catalyst/heater may fail to operate (increasing emissions)
- Failed emissions/inspection test (catalyst/heater related)
- Diagnostic trouble codes stored for heated catalyst/heater or related oxygen/catalyst circuits
What to check
- Use a scan tool: read stored codes, pending codes, and freeze-frame data; note related codes and readiness status
- Monitor live data for the heated catalyst temperature sensor and heater status for Bank 2; compare with Bank 1
- Visually inspect harness and connectors at the heated catalyst sensor and along routing to ECM for heat damage, chafing, corrosion, or pin pushing
- Perform a wiggle test while monitoring signal for intermittent changes
- Check for blown fuses and proper relay operation supplying the heater circuit
- Back-probe connector to check supply voltage, control signal (ECM output), and ground with key on and during commanded heater operation
Signal parameters
- Temperature sensor: NTC-type behavior — resistance decreases as temperature increases (measure with sensor cold and when warmed if safe)
- Temperature sensor voltage (back-probed): typically within 0.1–4.9 V depending on temperature and ECU pull-up — should change smoothly with temperature
- Heater power/control: likely switched battery voltage or PWM output from ECM when heater is commanded (0 V to battery voltage or PWM duty cycle)
- Compare Bank 2 sensor values to Bank 1 (if Bank 1 is known-good) to spot differences
Diagnostic algorithm
- Retrieve and record all related DTCs and freeze-frame data using a capable scan tool
- If multiple related codes exist, prioritize wiring/power/ground checks before component replacement
- Perform a careful visual inspection of the heated catalyst sensor, connector, and harness for heat damage, melted insulation, chafing, or corrosion; allow components to cool before touching
- Check fuses/relays for the heater power circuit and replace if faulty
- Back-probe the sensor connector with key ON: verify reference voltage/pull-up, sensor signal voltage, and ground presence; record values
- Command the heater ON using a diagnostic tool (if available) and observe control output and supply voltage; look for expected change (voltage or PWM)
- Disconnect the sensor and measure its resistance cold; if possible, apply controlled heat (heat gun briefly at safe distance) to confirm NTC resistance change. Do not use open flame and avoid overheating or touching hot exhaust
- Perform continuity/resistance checks between sensor connector and ECM harness pins to identify opens or shorts; check for short to ground or battery positive
- Repair any damaged wiring, connectors, or poor grounds. Replace the heated catalyst sensor/heater assembly if tests show the sensor/module is faulty.
- After repairs clear codes, perform a relearn if required, and road test to confirm the fault does not return and heater/sensor readings behave normally
- If wiring and sensor check good but fault persists, consider ECM input/driver fault and consult dealer-level diagnostics or replace ECM only after exhaustive verification
- Observe workshop safety: allow exhaust components to cool, use heat-resistant gloves, and secure vehicle on stable supports when working underneath
Likely causes
- Damaged connector or wiring chafing near the exhaust/catalyst causing intermittent open/short
- Failed temperature sensor or integrated heater/switch module on Bank 2
- Loss of supply or ground to the heater control circuit (fuse, relay, grounding strap)
- Corrosion at the sensor plug or pin making resistance/voltage readings invalid
Fault status
Status
Heated catalyst heater power switch temperature sensor electrical fault detected on Bank 2. Circuit open/short or invalid signal — heater function may be disabled. Inspect sensor, connector, supply, ground, and wiring to ECM.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
P1460
SATURN
P — Powertrain
Cooling Fan Control System
Views:
UK: 33
EN: 55
RU: 32
AI status
Completed
Completed
100%
Causes
- Open or short in wiring harness to the heated catalyst temperature sensor (Bank 2)
- Corroded, loose, or damaged connector/pins at the sensor or ECM
- Failed heated catalyst temperature sensor module or integrated switch/heater assembly
- Blown fuse or loss of power to the heater power switch circuit
- Poor or missing ground connection for the heater/sensor circuit
- Heat damage from exhaust, road debris, or previous repairs
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated/engine light on
- Possible limp-home behavior or reduced engine performance in some vehicles
- Heated catalyst/heater may fail to operate (increasing emissions)
- Failed emissions/inspection test (catalyst/heater related)
- Diagnostic trouble codes stored for heated catalyst/heater or related oxygen/catalyst circuits
What to check
- Use a scan tool: read stored codes, pending codes, and freeze-frame data; note related codes and readiness status
- Monitor live data for the heated catalyst temperature sensor and heater status for Bank 2; compare with Bank 1
- Visually inspect harness and connectors at the heated catalyst sensor and along routing to ECM for heat damage, chafing, corrosion, or pin pushing
- Perform a wiggle test while monitoring signal for intermittent changes
- Check for blown fuses and proper relay operation supplying the heater circuit
- Back-probe connector to check supply voltage, control signal (ECM output), and ground with key on and during commanded heater operation
Signal parameters
- Temperature sensor: NTC-type behavior — resistance decreases as temperature increases (measure with sensor cold and when warmed if safe)
- Temperature sensor voltage (back-probed): typically within 0.1–4.9 V depending on temperature and ECU pull-up — should change smoothly with temperature
- Heater power/control: likely switched battery voltage or PWM output from ECM when heater is commanded (0 V to battery voltage or PWM duty cycle)
- Compare Bank 2 sensor values to Bank 1 (if Bank 1 is known-good) to spot differences
Diagnostic algorithm
- Retrieve and record all related DTCs and freeze-frame data using a capable scan tool
- If multiple related codes exist, prioritize wiring/power/ground checks before component replacement
- Perform a careful visual inspection of the heated catalyst sensor, connector, and harness for heat damage, melted insulation, chafing, or corrosion; allow components to cool before touching
- Check fuses/relays for the heater power circuit and replace if faulty
- Back-probe the sensor connector with key ON: verify reference voltage/pull-up, sensor signal voltage, and ground presence; record values
- Command the heater ON using a diagnostic tool (if available) and observe control output and supply voltage; look for expected change (voltage or PWM)
- Disconnect the sensor and measure its resistance cold; if possible, apply controlled heat (heat gun briefly at safe distance) to confirm NTC resistance change. Do not use open flame and avoid overheating or touching hot exhaust
- Perform continuity/resistance checks between sensor connector and ECM harness pins to identify opens or shorts; check for short to ground or battery positive
- Repair any damaged wiring, connectors, or poor grounds. Replace the heated catalyst sensor/heater assembly if tests show the sensor/module is faulty.
- After repairs clear codes, perform a relearn if required, and road test to confirm the fault does not return and heater/sensor readings behave normally
- If wiring and sensor check good but fault persists, consider ECM input/driver fault and consult dealer-level diagnostics or replace ECM only after exhaustive verification
- Observe workshop safety: allow exhaust components to cool, use heat-resistant gloves, and secure vehicle on stable supports when working underneath
Likely causes
- Damaged connector or wiring chafing near the exhaust/catalyst causing intermittent open/short
- Failed temperature sensor or integrated heater/switch module on Bank 2
- Loss of supply or ground to the heater control circuit (fuse, relay, grounding strap)
- Corrosion at the sensor plug or pin making resistance/voltage readings invalid
Fault status
Status
Heated catalyst heater power switch temperature sensor electrical fault detected on Bank 2. Circuit open/short or invalid signal — heater function may be disabled. Inspect sensor, connector, supply, ground, and wiring to ECM.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
P1460
SUZUKI
P — Powertrain
Radiator Fan Control System Fault
Views:
UK: 31
EN: 43
RU: 29
AI status
Completed
Completed
100%
Causes
- Open or short in wiring harness to the heated catalyst temperature sensor (Bank 2)
- Corroded, loose, or damaged connector/pins at the sensor or ECM
- Failed heated catalyst temperature sensor module or integrated switch/heater assembly
- Blown fuse or loss of power to the heater power switch circuit
- Poor or missing ground connection for the heater/sensor circuit
- Heat damage from exhaust, road debris, or previous repairs
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated/engine light on
- Possible limp-home behavior or reduced engine performance in some vehicles
- Heated catalyst/heater may fail to operate (increasing emissions)
- Failed emissions/inspection test (catalyst/heater related)
- Diagnostic trouble codes stored for heated catalyst/heater or related oxygen/catalyst circuits
What to check
- Use a scan tool: read stored codes, pending codes, and freeze-frame data; note related codes and readiness status
- Monitor live data for the heated catalyst temperature sensor and heater status for Bank 2; compare with Bank 1
- Visually inspect harness and connectors at the heated catalyst sensor and along routing to ECM for heat damage, chafing, corrosion, or pin pushing
- Perform a wiggle test while monitoring signal for intermittent changes
- Check for blown fuses and proper relay operation supplying the heater circuit
- Back-probe connector to check supply voltage, control signal (ECM output), and ground with key on and during commanded heater operation
Signal parameters
- Temperature sensor: NTC-type behavior — resistance decreases as temperature increases (measure with sensor cold and when warmed if safe)
- Temperature sensor voltage (back-probed): typically within 0.1–4.9 V depending on temperature and ECU pull-up — should change smoothly with temperature
- Heater power/control: likely switched battery voltage or PWM output from ECM when heater is commanded (0 V to battery voltage or PWM duty cycle)
- Compare Bank 2 sensor values to Bank 1 (if Bank 1 is known-good) to spot differences
Diagnostic algorithm
- Retrieve and record all related DTCs and freeze-frame data using a capable scan tool
- If multiple related codes exist, prioritize wiring/power/ground checks before component replacement
- Perform a careful visual inspection of the heated catalyst sensor, connector, and harness for heat damage, melted insulation, chafing, or corrosion; allow components to cool before touching
- Check fuses/relays for the heater power circuit and replace if faulty
- Back-probe the sensor connector with key ON: verify reference voltage/pull-up, sensor signal voltage, and ground presence; record values
- Command the heater ON using a diagnostic tool (if available) and observe control output and supply voltage; look for expected change (voltage or PWM)
- Disconnect the sensor and measure its resistance cold; if possible, apply controlled heat (heat gun briefly at safe distance) to confirm NTC resistance change. Do not use open flame and avoid overheating or touching hot exhaust
- Perform continuity/resistance checks between sensor connector and ECM harness pins to identify opens or shorts; check for short to ground or battery positive
- Repair any damaged wiring, connectors, or poor grounds. Replace the heated catalyst sensor/heater assembly if tests show the sensor/module is faulty.
- After repairs clear codes, perform a relearn if required, and road test to confirm the fault does not return and heater/sensor readings behave normally
- If wiring and sensor check good but fault persists, consider ECM input/driver fault and consult dealer-level diagnostics or replace ECM only after exhaustive verification
- Observe workshop safety: allow exhaust components to cool, use heat-resistant gloves, and secure vehicle on stable supports when working underneath
Likely causes
- Damaged connector or wiring chafing near the exhaust/catalyst causing intermittent open/short
- Failed temperature sensor or integrated heater/switch module on Bank 2
- Loss of supply or ground to the heater control circuit (fuse, relay, grounding strap)
- Corrosion at the sensor plug or pin making resistance/voltage readings invalid
Fault status
Status
Heated catalyst heater power switch temperature sensor electrical fault detected on Bank 2. Circuit open/short or invalid signal — heater function may be disabled. Inspect sensor, connector, supply, ground, and wiring to ECM.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
P1460
VOLKSWAGEN
P — Powertrain
Exhaust Gas Temperature Control Bank 2 Limit Attained
Views:
UK: 31
EN: 44
RU: 27
AI status
Completed
Completed
100%
Causes
- Open or short in wiring harness to the heated catalyst temperature sensor (Bank 2)
- Corroded, loose, or damaged connector/pins at the sensor or ECM
- Failed heated catalyst temperature sensor module or integrated switch/heater assembly
- Blown fuse or loss of power to the heater power switch circuit
- Poor or missing ground connection for the heater/sensor circuit
- Heat damage from exhaust, road debris, or previous repairs
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated/engine light on
- Possible limp-home behavior or reduced engine performance in some vehicles
- Heated catalyst/heater may fail to operate (increasing emissions)
- Failed emissions/inspection test (catalyst/heater related)
- Diagnostic trouble codes stored for heated catalyst/heater or related oxygen/catalyst circuits
What to check
- Use a scan tool: read stored codes, pending codes, and freeze-frame data; note related codes and readiness status
- Monitor live data for the heated catalyst temperature sensor and heater status for Bank 2; compare with Bank 1
- Visually inspect harness and connectors at the heated catalyst sensor and along routing to ECM for heat damage, chafing, corrosion, or pin pushing
- Perform a wiggle test while monitoring signal for intermittent changes
- Check for blown fuses and proper relay operation supplying the heater circuit
- Back-probe connector to check supply voltage, control signal (ECM output), and ground with key on and during commanded heater operation
Signal parameters
- Temperature sensor: NTC-type behavior — resistance decreases as temperature increases (measure with sensor cold and when warmed if safe)
- Temperature sensor voltage (back-probed): typically within 0.1–4.9 V depending on temperature and ECU pull-up — should change smoothly with temperature
- Heater power/control: likely switched battery voltage or PWM output from ECM when heater is commanded (0 V to battery voltage or PWM duty cycle)
- Compare Bank 2 sensor values to Bank 1 (if Bank 1 is known-good) to spot differences
Diagnostic algorithm
- Retrieve and record all related DTCs and freeze-frame data using a capable scan tool
- If multiple related codes exist, prioritize wiring/power/ground checks before component replacement
- Perform a careful visual inspection of the heated catalyst sensor, connector, and harness for heat damage, melted insulation, chafing, or corrosion; allow components to cool before touching
- Check fuses/relays for the heater power circuit and replace if faulty
- Back-probe the sensor connector with key ON: verify reference voltage/pull-up, sensor signal voltage, and ground presence; record values
- Command the heater ON using a diagnostic tool (if available) and observe control output and supply voltage; look for expected change (voltage or PWM)
- Disconnect the sensor and measure its resistance cold; if possible, apply controlled heat (heat gun briefly at safe distance) to confirm NTC resistance change. Do not use open flame and avoid overheating or touching hot exhaust
- Perform continuity/resistance checks between sensor connector and ECM harness pins to identify opens or shorts; check for short to ground or battery positive
- Repair any damaged wiring, connectors, or poor grounds. Replace the heated catalyst sensor/heater assembly if tests show the sensor/module is faulty.
- After repairs clear codes, perform a relearn if required, and road test to confirm the fault does not return and heater/sensor readings behave normally
- If wiring and sensor check good but fault persists, consider ECM input/driver fault and consult dealer-level diagnostics or replace ECM only after exhaustive verification
- Observe workshop safety: allow exhaust components to cool, use heat-resistant gloves, and secure vehicle on stable supports when working underneath
Likely causes
- Damaged connector or wiring chafing near the exhaust/catalyst causing intermittent open/short
- Failed temperature sensor or integrated heater/switch module on Bank 2
- Loss of supply or ground to the heater control circuit (fuse, relay, grounding strap)
- Corrosion at the sensor plug or pin making resistance/voltage readings invalid
Fault status
Status
Heated catalyst heater power switch temperature sensor electrical fault detected on Bank 2. Circuit open/short or invalid signal — heater function may be disabled. Inspect sensor, connector, supply, ground, and wiring to ECM.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
Repair manuals
Manual library for VOLKSWAGEN
139
Browse 139 VOLKSWAGEN manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.
VOLKSWAGEN
-
VOLKSWAGEN: 2021
-
Atlas
- S, AWD
- S, FWD
- SE, 2.0L Eng VIN P, AWD
- SE, 2.0L Eng VIN P, FWD
- SE, 3.6L Eng VIN R, AWD
- SE, 3.6L Eng VIN R, FWD
- SEL, 2.0L Eng VIN P · 2.0L Eng VIN P2021: Atlas SEL
- SEL, 3.6L Eng VIN R, AWD
- SEL, 3.6L Eng VIN R, FWD
- SEL Premium, 2.0L Eng VIN P · 2.0L Eng VIN P2021: Atlas SEL Premium
- SEL Premium, 3.6L Eng VIN R · 3.6L Eng VIN R2021: Atlas SEL Premium
- SEL Premium R-Line
- SEL R-Line, AWD
- SEL R-Line, FWD
- SE R-Line, AWD
- SE R-Line, FWD
-
Atlas Cross Sport
- S, AWD
- S, FWD
- SE, 2.0L Eng VIN C, AWD
- SE, 2.0L Eng VIN C, FWD
- SE, 3.6L Eng VIN E, AWD
- SE, 3.6L Eng VIN E, FWD
- SEL, 2.0L Eng VIN C · 2.0L Eng VIN C2021: Atlas Cross Sport SEL
- SEL, 3.6L Eng VIN E, AWD
- SEL, 3.6L Eng VIN E, FWD
- SEL Premium, 2.0L Eng VIN C · 2.0L Eng VIN C2021: Atlas Cross Sport SEL Premium
- SEL Premium, 3.6L Eng VIN E · 3.6L Eng VIN E2021: Atlas Cross Sport SEL Premium
- SEL Premium R-Line
- SEL R-Line, AWD
- SEL R-Line, FWD
- SE R-Line, AWD
- SE R-Line, FWD
-
VOLKSWAGEN: 2020
-
Atlas
- S, 2.0L Eng VIN P · 2.0L Eng VIN P2020: Atlas S
- S, 3.6L Eng VIN R · 3.6L Eng VIN R2020: Atlas S
- SE, 2.0L Eng VIN P · 2.0L Eng VIN P2020: Atlas SE
- SE, 3.6L Eng VIN R, AWD
- SE, 3.6L Eng VIN R, FWD
- SEL, 2.0L Eng VIN P · 2.0L Eng VIN P2020: Atlas SEL
- SEL, 3.6L Eng VIN R, AWD
- SEL, 3.6L Eng VIN R, FWD
- SEL Premium
- SEL R-Line, AWD
- SEL R-Line, FWD
- SE R-Line, AWD
- SE R-Line, FWD
-
Atlas Cross Sport
- S, AWD
- S, FWD
- SE, 2.0L Eng VIN C, AWD
- SE, 2.0L Eng VIN C, FWD
- SE, 3.6L Eng VIN E, AWD
- SE, 3.6L Eng VIN E, FWD
- SEL, 2.0L Eng VIN C, AWD
- SEL, 2.0L Eng VIN C, FWD
- SEL, 3.6L Eng VIN E, AWD
- SEL, 3.6L Eng VIN E, FWD
- SEL Premium
- SEL Premium R-Line
- SEL R-Line, AWD
- SEL R-Line, FWD
- SE R-Line, AWD
- SE R-Line, FWD
-
Jetta
- GLI Autobahn, Automatic DCT Trans
- GLI Autobahn, Standard Trans
- GLI S, Automatic DCT Trans
- GLI S, Standard Trans
- R-Line, 1.4L Eng VIN 5, Automatic Trans
- R-Line, 1.4L Eng VIN 5, Standard Trans
- R-Line, 1.4L Eng VIN B · 1.4L Eng VIN B2020: Jetta R-Line
- S, 1.4L Eng VIN 5, Automatic Trans
- S, 1.4L Eng VIN 5, Standard Trans
- S, 1.4L Eng VIN B · 1.4L Eng VIN B2020: Jetta S
- SE, 1.4L Eng VIN 5 · 1.4L Eng VIN 52020: Jetta SE
- SE, 1.4L Eng VIN B · 1.4L Eng VIN B2020: Jetta SE
- SEL, 1.4L Eng VIN 5 · 1.4L Eng VIN 52020: Jetta SEL
- SEL, 1.4L Eng VIN B · 1.4L Eng VIN B2020: Jetta SEL
- SEL Premium, 1.4L Eng VIN 5 · 1.4L Eng VIN 52020: Jetta SEL Premium
- SEL Premium, 1.4L Eng VIN B · 1.4L Eng VIN B2020: Jetta SEL Premium
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