Diagnostic library
Find an OBD2 code
Search the code from your scanner, then narrow the library by system, severity, or code family.
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.
Quick browse
Choose a vehicle system
FiltersSeverity · family
Vehicle coverage
These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.
Diagnostic codes
Showing 433–456 of 479
C064DBrake Pressure Sensor N Circuit/OpenUrgentChassis & Brakes45–120 minutes for initial diagnosisC064EBrake Pressure Sensor N Circuit HighUrgentChassis & Brakes45–120 minutes for initial diagnosisC064FBrake Pressure Sensor N Circuit LowUrgentChassis & Brakes45–120 minutes for initial diagnosisC0650Brake Pressure Sensor N Range/PerformanceUrgentChassis & Brakes45–120 minutes for initial diagnosisC0651Left Front Wheel Speed Sensor B Circuit/OpenCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0652Left Front Wheel Speed Sensor B Range/PerformanceCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0653Left Front Wheel Speed Sensor B Circuit LowCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0654Left Front Wheel Speed Sensor B Circuit HighCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0655Left Front Wheel Speed Sensor B Intermittent/ErraticCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0656Left Front Wheel Speed Sensor B CorrelationCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0657Left Front Wheel Speed Sensor B Incorrect Component InstalledCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0658Right Front Wheel Speed Sensor B Circuit/OpenCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0659Right Front Wheel Speed Sensor B Range/PerformanceCheck soonChassis & Brakes45–120 minutes for initial diagnosisC065ARight Front Wheel Speed Sensor B Circuit LowCheck soonChassis & Brakes45–120 minutes for initial diagnosisC065BRight Front Wheel Speed Sensor BCircuit HighCheck soonChassis & Brakes45–120 minutes for initial diagnosisC065CRight Front Wheel Speed Sensor B Intermittent/ErraticCheck soonChassis & Brakes45–120 minutes for initial diagnosisC065DRight Front Wheel Speed Sensor B CorrelationCheck soonChassis & Brakes45–120 minutes for initial diagnosisC065ERight Front Wheel Speed Sensor B Incorrect Component InstalledCheck soonChassis & Brakes45–120 minutes for initial diagnosisC065FLeft Rear Wheel Speed Sensor B Circuit/OpenCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0660Left Rear Wheel Speed Sensor B Range/PerformanceCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0661Left Rear Wheel Speed Sensor B Circuit LowCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0662Left Rear Wheel Speed Sensor B Circuit HighCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0663Left Rear Wheel Speed Sensor B Intermittent/ErraticCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0664Left Rear Wheel Speed Sensor B CorrelationCheck soonChassis & Brakes45–120 minutes for initial diagnosis