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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.

Fuel System Check soon 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 289–312 of 975

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P04BAFuel Fill Door Position Sensor/Switch Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP04BA relates to fuel fill door position sensor/switch circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P04BFFuel Fill Door Unlock Control Circuit/OpenCheck soonFuel System30–120 minutes for initial diagnosisP04BF relates to fuel fill door unlock control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P04C0Fuel Fill Door Unlock Control Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP04C0 relates to fuel fill door unlock control range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P04C1Fuel Fill Door Unlock Control Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP04C1 relates to fuel fill door unlock control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P04C2Fuel Fill Door Unlock Control Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP04C2 relates to fuel fill door unlock control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P04C8Fuel Fill Door Open Request Sensor/Switch CircuitCheck soonFuel System30–120 minutes for initial diagnosisP04C8 relates to fuel fill door open request sensor/switch circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P04C9Fuel Fill Door Open Request Sensor/Switch Performance/Stuck OffCheck soonFuel System30–120 minutes for initial diagnosisP04C9 relates to fuel fill door open request sensor/switch performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P04CAFuel Fill Door Open Request Sensor/Switch Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP04CA relates to fuel fill door open request sensor/switch circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P04CBFuel Fill Door Open Request Sensor/Switch Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP04CB relates to fuel fill door open request sensor/switch circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P04CCFuel Fill Door Open Request Sensor/Switch Circuit Intermittent/ErraticCheck soonFuel System30–120 minutes for initial diagnosisP04CC relates to fuel fill door open request sensor/switch circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P04CDFuel Fill Door Open Request Sensor/Switch Stuck OnCheck soonFuel System30–120 minutes for initial diagnosisP04CD relates to fuel fill door open request sensor/switch stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P04DCFuel Fill Door Position Sensor/Switch Circuit Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP04DC relates to fuel fill door position sensor/switch circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P053FCold Start Fuel Pressure Performance Bank 1Check soonFuel System30–120 minutes for initial diagnosisP053F relates to cold start fuel pressure performance bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P054EIdle Control System - Fuel Quantity Lower Than ExpectedCheck soonFuel System30–120 minutes for initial diagnosisP054E relates to idle control system - fuel quantity lower than expected. Check the fault conditions and vehicle-specific procedure before replacing parts.P054FIdle Control System - Fuel Quantity Higher Than ExpectedCheck soonFuel System30–120 minutes for initial diagnosisP054F relates to idle control system - fuel quantity higher than expected. Check the fault conditions and vehicle-specific procedure before replacing parts.P05ECCold Start Injection Timing PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP05EC relates to cold start injection timing performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P05FCCold Start Fuel Pressure Performance Bank 2Check soonFuel System30–120 minutes for initial diagnosisP05FC relates to cold start fuel pressure performance bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P0611Fuel Injector Control Module PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP0611 relates to fuel injector control module performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0612Fuel Injector Control Module Relay ControlCheck soonFuel System30–120 minutes for initial diagnosisP0612 relates to fuel injector control module relay control. Check the fault conditions and vehicle-specific procedure before replacing parts.P0618Alternative Fuel Control Module KAM ErrorCheck soonFuel System30–120 minutes for initial diagnosisP0618 relates to alternative fuel control module kam error. Check the fault conditions and vehicle-specific procedure before replacing parts.P0619Alternative Fuel Control Module RAM/ROM ErrorCheck soonFuel System30–120 minutes for initial diagnosisP0619 relates to alternative fuel control module ram/rom error. Check the fault conditions and vehicle-specific procedure before replacing parts.P0627Fuel Pump A Control Circuit/OpenCheck soonFuel System30–120 minutes for initial diagnosisP0627 relates to fuel pump a control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P0628Fuel Pump A Control Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP0628 relates to fuel pump a control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0629Fuel Pump A Control Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP0629 relates to fuel pump a control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.