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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.

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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 1585–1608 of 1939

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P2A39O2 Sensor Positive Current Control Circuit Low Bank 1 Sensor 3Check soonSensors & Electronics30–120 minutes for initial diagnosisP2A39 relates to o2 sensor positive current control circuit low bank 1 sensor 3. Check the fault conditions and vehicle-specific procedure before replacing parts.P2A3AO2 Sensor Positive Current Control Circuit High Bank 1 Sensor 3Check soonSensors & Electronics30–120 minutes for initial diagnosisP2A3A relates to o2 sensor positive current control circuit high bank 1 sensor 3. Check the fault conditions and vehicle-specific procedure before replacing parts.P2A3BO2 Sensor Negative Current Control Circuit/Open Bank 1 Sensor 3Check soonSensors & Electronics30–120 minutes for initial diagnosisP2A3B relates to o2 sensor negative current control circuit/open bank 1 sensor 3. Check the fault conditions and vehicle-specific procedure before replacing parts.P2A3CO2 Sensor Negative Current Control Circuit Low Bank 1 Sensor 3Check soonSensors & Electronics30–120 minutes for initial diagnosisP2A3C relates to o2 sensor negative current control circuit low bank 1 sensor 3. Check the fault conditions and vehicle-specific procedure before replacing parts.P2A3DO2 Sensor Negative Current Control Circuit High Bank 1 Sensor 3Check soonSensors & Electronics30–120 minutes for initial diagnosisP2A3D relates to o2 sensor negative current control circuit high bank 1 sensor 3. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AB3Cold Start Intake Manifold Runner Control Stuck Open Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2AB3 relates to cold start intake manifold runner control stuck open bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AB4Cold Start Intake Manifold Runner Control Stuck Open Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2AB4 relates to cold start intake manifold runner control stuck open bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AB5Cold Start Intake Manifold Runner Control Stuck Closed Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2AB5 relates to cold start intake manifold runner control stuck closed bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AB6Cold Start Intake Manifold Runner Control Stuck Closed Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2AB6 relates to cold start intake manifold runner control stuck closed bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AB7Wastegate Position Sensor A CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2AB7 relates to wastegate position sensor a circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AB8Wastegate Position Sensor A Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2AB8 relates to wastegate position sensor a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AB9Wastegate Position Sensor A Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2AB9 relates to wastegate position sensor a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2ABAWastegate Position Sensor B CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2ABA relates to wastegate position sensor b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2ABBWastegate Position Sensor B Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2ABB relates to wastegate position sensor b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2ABCWastegate Position Sensor B Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2ABC relates to wastegate position sensor b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2ABDTurbocharger/Supercharger Wastegate Actuator A Driver Current/Temperature Too HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2ABD relates to turbocharger/supercharger wastegate actuator a driver current/temperature too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2ABETurbocharger/Supercharger Wastegate Actuator B Driver Current/Temperature Too HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2ABE relates to turbocharger/supercharger wastegate actuator b driver current/temperature too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2ACCReductant Temperature Sensor B CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2ACC relates to reductant temperature sensor b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2ACDReductant Temperature Sensor B Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2ACD relates to reductant temperature sensor b circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2ACEReductant Temperature Sensor B Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2ACE relates to reductant temperature sensor b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2ACFReductant Temperature Sensor B Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2ACF relates to reductant temperature sensor b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AD0Reductant Temperature Sensor B Circuit IntermittentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2AD0 relates to reductant temperature sensor b circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AD6Reductant Pump Motor Position Sensor CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2AD6 relates to reductant pump motor position sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AD7Reductant Pump Motor Position Sensor Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2AD7 relates to reductant pump motor position sensor circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.