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 241–264 of 621
C0609Park Brake Switch CircuitUrgentChassis & Brakes45–120 minutes for initial diagnosisC060APark Brake Switch StuckUrgentChassis & Brakes45–120 minutes for initial diagnosisC060BLeft Park Brake Actuator Control Circuit/OpenUrgentChassis & Brakes45–120 minutes for initial diagnosisC060CLeft Park Brake Actuator Control Circuit LowUrgentChassis & Brakes45–120 minutes for initial diagnosisC060DLeft Park Brake Actuator Control Circuit HighUrgentChassis & Brakes45–120 minutes for initial diagnosisC060ELeft Park Brake Actuator Performance/Stuck OffUrgentChassis & Brakes45–120 minutes for initial diagnosisC060FLeft Park Brake Actuator Stuck OnUrgentChassis & Brakes45–120 minutes for initial diagnosisC0610Right Park Brake Actuator Control Circuit/OpenUrgentChassis & Brakes45–120 minutes for initial diagnosisC0611Right Park Brake Actuator Control Circuit LowUrgentChassis & Brakes45–120 minutes for initial diagnosisC0612Right Park Brake Actuator Control Circuit HighUrgentChassis & Brakes45–120 minutes for initial diagnosisC0613Right Park Brake Actuator Performance/Stuck OffUrgentChassis & Brakes45–120 minutes for initial diagnosisC0614Right Park Brake Actuator Stuck OnUrgentChassis & Brakes45–120 minutes for initial diagnosisC0615Park Brake Control Module Control Circuit/OpenUrgentChassis & Brakes45–120 minutes for initial diagnosisC0616Park Brake Control Module Control Circuit PerformanceUrgentChassis & Brakes45–120 minutes for initial diagnosisC0617Park Brake Control Module Control Circuit LowUrgentChassis & Brakes45–120 minutes for initial diagnosisC0618Park Brake Control Module Control Circuit HighUrgentChassis & Brakes45–120 minutes for initial diagnosisC0619Brake Pedal Position Sensor “A” Offset Exceeded Learning LimitUrgentChassis & Brakes45–120 minutes for initial diagnosisC061ABrake Pedal Position Sensor “B” Offset Exceeded Learning LimitUrgentChassis & Brakes45–120 minutes for initial diagnosisC061CVariable Effort Steering Actuator Control Circuit/OpenUrgentChassis & Brakes45–120 minutes for initial diagnosisC061DVariable Effort Steering Actuator Control Circuit LowUrgentChassis & Brakes45–120 minutes for initial diagnosisC061EVariable Effort Steering Actuator Control Circuit HighUrgentChassis & Brakes45–120 minutes for initial diagnosisC061FVariable Effort Steering Actuator Control Circuit PerformanceUrgentChassis & Brakes45–120 minutes for initial diagnosisC0620Variable Effort Steering Lock/Safety Actuator Control Circuit/OpenUrgentChassis & Brakes45–120 minutes for initial diagnosisC0621Variable Effort Steering Lock/Safety Actuator Control Circuit LowUrgentChassis & Brakes45–120 minutes for initial diagnosis