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9,253 diagnostic guides
Find codes by symptomChoose what you notice to search matching code guides.
Rough idle or shakingVibration while stoppedHard to startLong cranking or no-startEngine stallsCuts out at idle or on the roadHesitates or loses powerSlow response when acceleratingBattery light is onCharging system warningHarsh 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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These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.
Diagnostic codes
Showing 73–96 of 975
P01A4Alternative Fuel Rail Pressure Sensor PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP01A5Alternative Fuel Rail Pressure Sensor Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP01A6Alternative Fuel Rail Pressure Sensor Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP01A7Alternative Fuel Rail Pressure Sensor Circuit Intermittent/ErraticCheck soonFuel System30–120 minutes for initial diagnosisP01A8Alternative Fuel Rail/System Pressure - Too LowCheck soonFuel System30–120 minutes for initial diagnosisP01A9Alternative Fuel Rail/System Pressure - Too HighCheck soonFuel System30–120 minutes for initial diagnosisP01AAAlternative Fuel Tank Temperature Sensor CircuitCheck soonFuel System30–120 minutes for initial diagnosisP01ABAlternative Fuel Tank Temperature Sensor Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP01ACAlternative Fuel Tank Temperature Sensor Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP01ADAlternative Fuel Tank Temperature Sensor Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP01AEAlternative Fuel Tank Temperature Sensor Circuit Intermittent/ErraticCheck soonFuel System30–120 minutes for initial diagnosisP01AFAlternative Fuel Tank A Level Sensor CircuitCheck soonFuel System30–120 minutes for initial diagnosisP01B0Alternative Fuel Tank A Level Sensor Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP01B1Alternative Fuel Tank A Level Sensor Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP01B2Alternative Fuel Tank A Level Sensor Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP01B3Alternative Fuel Tank A Level Sensor Circuit Intermittent/ErraticCheck soonFuel System30–120 minutes for initial diagnosisP01B4Alternative Fuel Rail Temperature Sensor CircuitCheck soonFuel System30–120 minutes for initial diagnosisP01B5Alternative Fuel Rail Temperature Sensor PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP01B6Alternative Fuel Rail Temperature Sensor Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP01B7Alternative Fuel Rail Temperature Sensor Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP01B8Alternative Fuel Rail Temperature Sensor Circuit Intermittent/ErraticCheck soonFuel System30–120 minutes for initial diagnosisP01BEFuel Rail Pressure Sensor Circuit Bank 2Check soonFuel System30–120 minutes for initial diagnosisP01BFFuel Rail Pressure Sensor Circuit Range/Performance Bank 2Check soonFuel System30–120 minutes for initial diagnosisP01C0Fuel Rail Pressure Sensor Circuit Low Bank 2Check soonFuel System30–120 minutes for initial diagnosis