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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 625–648 of 8256

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P01ACAlternative Fuel Tank Temperature Sensor Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP01AC relates to alternative fuel tank temperature sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P01ADAlternative Fuel Tank Temperature Sensor Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP01AD relates to alternative fuel tank temperature sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P01AEAlternative Fuel Tank Temperature Sensor Circuit Intermittent/ErraticCheck soonFuel System30–120 minutes for initial diagnosisP01AE relates to alternative fuel tank temperature sensor circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P01AFAlternative Fuel Tank A Level Sensor CircuitCheck soonFuel System30–120 minutes for initial diagnosisP01AF relates to alternative fuel tank a level sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P01B0Alternative Fuel Tank A Level Sensor Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP01B0 relates to alternative fuel tank a level sensor range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P01B1Alternative Fuel Tank A Level Sensor Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP01B1 relates to alternative fuel tank a level sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P01B2Alternative Fuel Tank A Level Sensor Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP01B2 relates to alternative fuel tank a level sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P01B3Alternative Fuel Tank A Level Sensor Circuit Intermittent/ErraticCheck soonFuel System30–120 minutes for initial diagnosisP01B3 relates to alternative fuel tank a level sensor circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P01B4Alternative Fuel Rail Temperature Sensor CircuitCheck soonFuel System30–120 minutes for initial diagnosisP01B4 relates to alternative fuel rail temperature sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P01B5Alternative Fuel Rail Temperature Sensor PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP01B5 relates to alternative fuel rail temperature sensor performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P01B6Alternative Fuel Rail Temperature Sensor Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP01B6 relates to alternative fuel rail temperature sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P01B7Alternative Fuel Rail Temperature Sensor Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP01B7 relates to alternative fuel rail temperature sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P01B8Alternative Fuel Rail Temperature Sensor Circuit Intermittent/ErraticCheck soonFuel System30–120 minutes for initial diagnosisP01B8 relates to alternative fuel rail temperature sensor circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P01B9Engine Oil Temperature Sensor B CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP01B9 relates to engine oil temperature sensor b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P01BAEngine Oil Temperature Sensor B Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP01BA relates to engine oil temperature sensor b range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P01BBEngine Oil Temperature Sensor B Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP01BB relates to engine oil temperature sensor b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P01BCEngine Oil Temperature Sensor B Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP01BC relates to engine oil temperature sensor b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P01BDEngine Oil Temperature Sensor B Circuit Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP01BD relates to engine oil temperature sensor b circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P01BEFuel Rail Pressure Sensor Circuit Bank 2Check soonFuel System30–120 minutes for initial diagnosisP01BE relates to fuel rail pressure sensor circuit bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P01BFFuel Rail Pressure Sensor Circuit Range/Performance Bank 2Check soonFuel System30–120 minutes for initial diagnosisP01BF relates to fuel rail pressure sensor circuit range/performance bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P01C0Fuel Rail Pressure Sensor Circuit Low Bank 2Check soonFuel System30–120 minutes for initial diagnosisP01C0 relates to fuel rail pressure sensor circuit low bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P01C1Fuel Rail Pressure Sensor Circuit High Bank 2Check soonFuel System30–120 minutes for initial diagnosisP01C1 relates to fuel rail pressure sensor circuit high bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P01C2Fuel Rail Pressure Sensor Circuit Intermittent/Erratic Bank 2Check soonFuel System30–120 minutes for initial diagnosisP01C2 relates to fuel rail pressure sensor circuit intermittent/erratic bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P01C3Fuel Pressure Sensor A CircuitCheck soonFuel System30–120 minutes for initial diagnosisP01C3 relates to fuel pressure sensor a circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.