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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 673–696 of 1016

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P2554Throttle/Fuel Inhibit A Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2554 relates to throttle/fuel inhibit a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2555Throttle/Fuel Inhibit A Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP2555 relates to throttle/fuel inhibit a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2584Fuel Additive Control Module Requested MIL IlluminationCheck soonFuel System30–120 minutes for initial diagnosisP2584 relates to fuel additive control module requested mil illumination. Check the fault conditions and vehicle-specific procedure before replacing parts.P2585Fuel Additive Control Module Warning Lamp RequestCheck soonFuel System30–120 minutes for initial diagnosisP2585 relates to fuel additive control module warning lamp request. Check the fault conditions and vehicle-specific procedure before replacing parts.P25A4Fuel Mode Select Switch CircuitCheck soonFuel System30–120 minutes for initial diagnosisP25A4 relates to fuel mode select switch circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P25A5Fuel Mode Select Switch PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP25A5 relates to fuel mode select switch performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P25A6Fuel Mode Select Switch Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP25A6 relates to fuel mode select switch circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P25A7Fuel Mode Select Switch Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP25A7 relates to fuel mode select switch circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P25A8Fuel Mode Select Switch Circuit Intermittent/ErraticCheck soonFuel System30–120 minutes for initial diagnosisP25A8 relates to fuel mode select switch circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P25B0Fuel Level Sensor A StuckLow priorityFuel System30–120 minutes for initial diagnosisP25B0 relates to fuel level sensor a stuck. Check the fault conditions and vehicle-specific procedure before replacing parts.P25B1Fuel Level Sensor B StuckLow priorityFuel System30–120 minutes for initial diagnosisP25B1 relates to fuel level sensor b stuck. Check the fault conditions and vehicle-specific procedure before replacing parts.P25B2Fuel Level Sensor A or B StuckLow priorityFuel System30–120 minutes for initial diagnosisP25B2 relates to fuel level sensor a or b stuck. Check the fault conditions and vehicle-specific procedure before replacing parts.P25BDUnmetered Fuel - Forced Engine ShutdownCheck soonFuel System30–120 minutes for initial diagnosisP25BD relates to unmetered fuel - forced engine shutdown. Check the fault conditions and vehicle-specific procedure before replacing parts.P25BEAlternative Fuel Disable Control Circuit/OpenCheck soonFuel System30–120 minutes for initial diagnosisP25BE relates to alternative fuel disable control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P25BFAlternative Fuel Disable Control Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP25BF relates to alternative fuel disable control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P25C0Alternative Fuel Disable Control Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP25C0 relates to alternative fuel disable control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P25C1Alternative Fuel Disable Signal CircuitCheck soonFuel System30–120 minutes for initial diagnosisP25C1 relates to alternative fuel disable signal circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P25C2Alternative Fuel Disable Signal Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP25C2 relates to alternative fuel disable signal circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P25C3Alternative Fuel Disable Signal Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP25C3 relates to alternative fuel disable signal circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P25D7Fuel Level Sensor C CircuitLow priorityFuel System30–120 minutes for initial diagnosisP25D7 relates to fuel level sensor c circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P25D8Fuel Level Sensor C PerformanceLow priorityFuel System30–120 minutes for initial diagnosisP25D8 relates to fuel level sensor c performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P25D9Fuel Level Sensor C Circuit LowLow priorityFuel System30–120 minutes for initial diagnosisP25D9 relates to fuel level sensor c circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P25DAFuel Level Sensor C Circuit HighLow priorityFuel System30–120 minutes for initial diagnosisP25DA relates to fuel level sensor c circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P25DBFuel Level Sensor C Circuit IntermittentLow priorityFuel System30–120 minutes for initial diagnosisP25DB relates to fuel level sensor c circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.