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Rough idle or shakingVibration while stopped Hard to startLong cranking or no-start Engine stallsCuts out at idle or on the road Hesitates or loses powerSlow response when accelerating Battery light is onCharging system warning Harsh gear changesDelayed or rough shifting

A symptom can have several causes. Treat matching codes as clues and follow the diagnostic checks in each guide.

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Engine1049 Emissions515 Fuel1016 Sensors & Electronics2110 Transmission866 Electrical & Charging1797 Body & Restraints193 Chassis & Brakes479 Network & Communication1228

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All severities9253 Low priority305 Check soon8256 Urgent621

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All families9253 P · Powertrain7353 B · Body193 C · Chassis479 U · Network1228

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These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.

Diagnostic codes

Showing 5809–5832 of 6682

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P2C36Crankcase Pressure Sensor B Circuit Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2C36 relates to crankcase pressure sensor b circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C37Cold Start Engine Coolant Pump PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2C37 relates to cold start engine coolant pump performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C38Cylinder Head Temperature Sensor B CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP2C38 relates to cylinder head temperature sensor b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C39Cylinder Head Temperature Sensor B Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2C39 relates to cylinder head temperature sensor b range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C3ACylinder Head Temperature Sensor B Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2C3A relates to cylinder head temperature sensor b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C3BCylinder Head Temperature Sensor B Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2C3B relates to cylinder head temperature sensor b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C3CCylinder Head Temperature Sensor B Circuit Intermittent/ErraticCheck soonEngine Problems30–120 minutes for initial diagnosisP2C3C relates to cylinder head temperature sensor b circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C3DCylinder Head Temperature Sensor A/B CorrelationCheck soonEngine Problems30–120 minutes for initial diagnosisP2C3D relates to cylinder head temperature sensor a/b correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C3EFan 4 Control CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP2C3E relates to fan 4 control circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C3FFan 4 Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2C3F relates to fan 4 control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C40Fan 4 Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2C40 relates to fan 4 control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C41Fan 3 Performance/Stuck OffCheck soonEngine Problems30–120 minutes for initial diagnosisP2C41 relates to fan 3 performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C42Fan 4 Performance/Stuck OffCheck soonEngine Problems30–120 minutes for initial diagnosisP2C42 relates to fan 4 performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C43Battery Isolation/Voltage Stabilization Control CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C43 relates to battery isolation/voltage stabilization control circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C44Battery Isolation/Voltage Stabilization Control Circuit PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C44 relates to battery isolation/voltage stabilization control circuit performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C45Battery Isolation/Voltage Stabilization Control Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C45 relates to battery isolation/voltage stabilization control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C46Battery Isolation/Voltage Stabilization Control Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C46 relates to battery isolation/voltage stabilization control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C47Battery Isolation/Voltage Stabilization Control Circuit IntermittentCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C47 relates to battery isolation/voltage stabilization control circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C48Coolant Pump C Control Circuit Performance/Stuck OffCheck soonEngine Problems30–120 minutes for initial diagnosisP2C48 relates to coolant pump c control circuit performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C49Coolant Pump D Control Circuit Performance/Stuck OffCheck soonEngine Problems30–120 minutes for initial diagnosisP2C49 relates to coolant pump d control circuit performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C4AClutch Actuator Position Sensor CircuitCheck soonTransmission Issues30–120 minutes for initial diagnosisP2C4A relates to clutch actuator position sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C4BClutch Actuator Position Sensor Circuit Range/PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP2C4B relates to clutch actuator position sensor circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C4CClutch Actuator Position Sensor Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP2C4C relates to clutch actuator position sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C4DClutch Actuator Position Sensor Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP2C4D relates to clutch actuator position sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.