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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 865–888 of 1016

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P2A98Alternative Fuel Tank Select Valve B Control Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP2A98 relates to alternative fuel tank select valve b control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2A99Alternative Fuel Tank Select Valve C Control Circuit/OpenCheck soonFuel System30–120 minutes for initial diagnosisP2A99 relates to alternative fuel tank select valve c control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2A9AAlternative Fuel Tank Select Valve C Control Circuit PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2A9A relates to alternative fuel tank select valve c control circuit performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2A9BAlternative Fuel Tank Select Valve C Control Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2A9B relates to alternative fuel tank select valve c control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2A9CAlternative Fuel Tank Select Valve C Control Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP2A9C relates to alternative fuel tank select valve c control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2A9DAlternative Fuel High Pressure System Small LeakCheck soonFuel System30–120 minutes for initial diagnosisP2A9D relates to alternative fuel high pressure system small leak. Check the fault conditions and vehicle-specific procedure before replacing parts.P2A9EAlternative Fuel Return Line Valve Control Circuit/OpenCheck soonFuel System30–120 minutes for initial diagnosisP2A9E relates to alternative fuel return line valve control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2A9FAlternative Fuel Return Line Valve Control Circuit Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2A9F relates to alternative fuel return line valve control circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AA0Alternative Fuel Return Line Valve Control Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2AA0 relates to alternative fuel return line valve control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AA1Alternative Fuel Return Line Valve Control Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP2AA1 relates to alternative fuel return line valve control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AA2Alternative Fuel Return Line Insufficient FlowCheck soonFuel System30–120 minutes for initial diagnosisP2AA2 relates to alternative fuel return line insufficient flow. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AACDiesel Fuel Presence Sensor CircuitCheck soonFuel System30–120 minutes for initial diagnosisP2AAC relates to diesel fuel presence sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AADDiesel Fuel Presence Sensor Circuit Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2AAD relates to diesel fuel presence sensor circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AAEDiesel Fuel Presence Sensor Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2AAE relates to diesel fuel presence sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AAFDiesel Fuel Presence Sensor Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP2AAF relates to diesel fuel presence sensor 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.