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9,253 diagnostic guides

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Find codes by symptomChoose what you notice to search matching code guides.

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.

Sensors & Electronics P · Powertrain Clear all

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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 1921–1944 of 2110

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P2D30Cold Start Turbocharger/Supercharger A OverboostCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D30 relates to cold start turbocharger/supercharger a overboost. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D31Intake Manifold Tuning Valve Exceeded Learning Limit Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2D31 relates to intake manifold tuning valve exceeded learning limit bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D32Intake Manifold Tuning Valve Control Circuit Driver Current/Temperature Too High Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2D32 relates to intake manifold tuning valve control circuit driver current/temperature too high bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D3AForced Hybrid/EV System ShutdownCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D3A relates to forced hybrid/ev system shutdown. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D3BHybrid/EV Discharge System FaultCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D3B relates to hybrid/ev discharge system fault. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D3CCold Start Hybrid/EV Drive Motor PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D3C relates to cold start hybrid/ev drive motor performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D3DCold Start Hybrid/EV Drive Motor Inverter Torque PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D3D relates to cold start hybrid/ev drive motor inverter torque performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D44A/C Compressor Motor PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D44 relates to a/c compressor motor performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D45Reductant Temperature Too LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D45 relates to reductant temperature too low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D5AReductant Level Sensor A/B CorrelationCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D5A relates to reductant level sensor a/b correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DA8DC/AC Converter Control Module A Switch A CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2DA8 relates to dc/ac converter control module a switch a circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DA9DC/AC Converter Control Module A Switch A Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2DA9 relates to dc/ac converter control module a switch a circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DAADC/AC Converter Control Module A Switch B CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2DAA relates to dc/ac converter control module a switch b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DABDC/AC Converter Control Module A Switch B Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2DAB relates to dc/ac converter control module a switch b circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DACDrive Motor A Temperature Sensor B CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2DAC relates to drive motor a temperature sensor b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DADDrive Motor A Temperature Sensor B Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2DAD relates to drive motor a temperature sensor b circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DAEDrive Motor A Temperature Sensor B Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2DAE relates to drive motor a temperature sensor b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DAFDrive Motor A Temperature Sensor B Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2DAF relates to drive motor a temperature sensor b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DB0Drive Motor A Temperature Sensor B Circuit IntermittentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2DB0 relates to drive motor a temperature sensor b circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DB1Drive Motor A Temperature Sensor C CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2DB1 relates to drive motor a temperature sensor c circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DB2Drive Motor A Temperature Sensor C Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2DB2 relates to drive motor a temperature sensor c circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DB3Drive Motor A Temperature Sensor C Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2DB3 relates to drive motor a temperature sensor c circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DB4Drive Motor A Temperature Sensor C Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2DB4 relates to drive motor a temperature sensor c circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DB5Drive Motor A Temperature Sensor C Circuit IntermittentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2DB5 relates to drive motor a temperature sensor c circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.