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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 745–768 of 975
P2A48Alternative Fuel Tank C Pressure Sensor Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2A49Alternative Fuel Tank C Pressure Sensor Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP2A4AAlternative Fuel Tank C Pressure Sensor Circuit Intermittent/ErraticCheck soonFuel System30–120 minutes for initial diagnosisP2A4BAlternative Fuel Temperature Sensor CircuitCheck soonFuel System30–120 minutes for initial diagnosisP2A4CAlternative Fuel Temperature Sensor Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2A4DAlternative Fuel Temperature Sensor Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2A4EAlternative Fuel Temperature Sensor Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP2A4FAlternative Fuel Temperature Sensor Circuit Intermittent/ErraticCheck soonFuel System30–120 minutes for initial diagnosisP2A50Alternative Fuel Vaporizer A Outlet Temperature Sensor CircuitCheck soonFuel System30–120 minutes for initial diagnosisP2A51Alternative Fuel Vaporizer A Outlet Temperature Sensor Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2A52Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2A53Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP2A54Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit Intermittent/ErraticCheck soonFuel System30–120 minutes for initial diagnosisP2A55Alternative Fuel Vaporizer B Outlet Temperature Sensor CircuitCheck soonFuel System30–120 minutes for initial diagnosisP2A56Alternative Fuel Vaporizer B Outlet Temperature Sensor Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2A57Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2A58Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP2A59Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit Intermittent/ErraticCheck soonFuel System30–120 minutes for initial diagnosisP2A5AAlternative Fuel Vaporizer C Outlet Temperature Sensor CircuitCheck soonFuel System30–120 minutes for initial diagnosisP2A5BAlternative Fuel Vaporizer C Outlet Temperature Sensor Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2A5CAlternative Fuel Vaporizer C Outlet Temperature Sensor Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2A5DAlternative Fuel Vaporizer C Outlet Temperature Sensor Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP2A5EAlternative Fuel Vaporizer C Outlet Temperature Sensor Circuit Intermittent/ErraticCheck soonFuel System30–120 minutes for initial diagnosisP2A5FAlternative Fuel Tank B Level Sensor CircuitCheck soonFuel System30–120 minutes for initial diagnosis