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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 6049–6072 of 7353

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P2AF3Starter Relay C Control Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2AF3 relates to starter relay c control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AF4Starter Relay C Control Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2AF4 relates to starter relay c control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AF5Starter Relay C Stuck OnCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2AF5 relates to starter relay c stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AF6Starter Relay C Stuck OffCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2AF6 relates to starter relay c stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AF7Starter Relay D Control Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2AF7 relates to starter relay d control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AF8Starter Relay D Control Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2AF8 relates to starter relay d control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AF9Starter Relay D Control Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2AF9 relates to starter relay d control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AFAStarter Relay D Stuck OnCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2AFA relates to starter relay d stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AFBStarter Relay D Stuck OffCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2AFB relates to starter relay d stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AFCEngine Coolant Temperature Sensor 4 CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP2AFC relates to engine coolant temperature sensor 4 circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AFDEngine Coolant Temperature Sensor 4 Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2AFD relates to engine coolant temperature sensor 4 circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AFEEngine Coolant Temperature Sensor 4 Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2AFE relates to engine coolant temperature sensor 4 circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AFFEngine Coolant Temperature Sensor 4 Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2AFF relates to engine coolant temperature sensor 4 circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B00Cylinder 1 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B00 relates to cylinder 1 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B01Cylinder 2 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B01 relates to cylinder 2 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B02Cylinder 3 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B02 relates to cylinder 3 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B03Cylinder 4 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B03 relates to cylinder 4 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B04Cylinder 5 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B04 relates to cylinder 5 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B05Cylinder 6 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B05 relates to cylinder 6 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B06Cylinder 7 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B06 relates to cylinder 7 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B07Cylinder 8 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B07 relates to cylinder 8 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B08Cold Start Cylinder 1 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B08 relates to cold start cylinder 1 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B09Cold Start Cylinder 2 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B09 relates to cold start cylinder 2 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B0ACold Start Cylinder 3 Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2B0A relates to cold start cylinder 3 injection pulse performance. Check the fault conditions and vehicle-specific procedure before replacing parts.