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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 289–312 of 1016

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P0464Fuel Level Sensor Circuit IntermittentLow priorityFuel System30–120 minutes for initial diagnosisP0464 indicates a fault related to fuel level sensor circuit intermittent. Learn the likely causes and a practical diagnostic order before replacing parts.P04B0Refueling Vapor Control Valve Circuit/OpenCheck soonFuel System30–120 minutes for initial diagnosisP04B0 relates to refueling vapor control valve circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P04B1Refueling Vapor Control Valve Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP04B1 relates to refueling vapor control valve circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P04B2Refueling Vapor Control Valve Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP04B2 relates to refueling vapor control valve circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P04B3Refueling Vapor Control Valve Stuck Performance/Stuck OpenCheck soonFuel System30–120 minutes for initial diagnosisP04B3 relates to refueling vapor control valve stuck performance/stuck open. Check the fault conditions and vehicle-specific procedure before replacing parts.P04B4Refueling Vapor Control Valve Stuck ClosedCheck soonFuel System30–120 minutes for initial diagnosisP04B4 relates to refueling vapor control valve stuck closed. Check the fault conditions and vehicle-specific procedure before replacing parts.P04B5Fuel Fill Door Stuck OpenCheck soonFuel System30–120 minutes for initial diagnosisP04B5 relates to fuel fill door stuck open. Check the fault conditions and vehicle-specific procedure before replacing parts.P04B6Fuel Fill Door Stuck ClosedCheck soonFuel System30–120 minutes for initial diagnosisP04B6 relates to fuel fill door stuck closed. Check the fault conditions and vehicle-specific procedure before replacing parts.P04B7Fuel Fill Door Position Sensor/Switch Circuit Intermittent/ErraticCheck soonFuel System30–120 minutes for initial diagnosisP04B7 relates to fuel fill door position sensor/switch circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P04B8Fuel Fill Door Position Sensor/Switch CircuitCheck soonFuel System30–120 minutes for initial diagnosisP04B8 relates to fuel fill door position sensor/switch circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P04B9Fuel Fill Door Position Sensor/Switch Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP04B9 relates to fuel fill door position sensor/switch circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.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.P04BBFuel Fill Door Lock Control Circuit/OpenLow priorityFuel System30–120 minutes for initial diagnosisP04BB relates to fuel fill door lock control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P04BCFuel Fill Door Lock Control Range/PerformanceLow priorityFuel System30–120 minutes for initial diagnosisP04BC relates to fuel fill door lock control range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P04BDFuel Fill Door Lock Control Circuit LowLow priorityFuel System30–120 minutes for initial diagnosisP04BD relates to fuel fill door lock control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P04BEFuel Fill Door Lock Control Circuit HighLow priorityFuel System30–120 minutes for initial diagnosisP04BE relates to fuel fill door lock control 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.P04C3Fuel Fill Door Lock Position Sensor/Switch CircuitLow priorityFuel System30–120 minutes for initial diagnosisP04C3 relates to fuel fill door lock position sensor/switch circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P04C4Fuel Fill Door Lock Position Sensor/Switch Circuit Range/PerformanceLow priorityFuel System30–120 minutes for initial diagnosisP04C4 relates to fuel fill door lock position sensor/switch circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P04C5Fuel Fill Door Lock Position Sensor/Switch Circuit LowLow priorityFuel System30–120 minutes for initial diagnosisP04C5 relates to fuel fill door lock position sensor/switch circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P04C6Fuel Fill Door Lock Position Sensor/Switch Circuit HighLow priorityFuel System30–120 minutes for initial diagnosisP04C6 relates to fuel fill door lock position sensor/switch circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.