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 217–240 of 1049
P03D6Cylinder 7 Pressure Too LowCheck soonEngine Problems30–120 minutes for initial diagnosisP03D7Cylinder 7 Pressure Too HighCheck soonEngine Problems30–120 minutes for initial diagnosisP03D8Cylinder 7 Pressure Variation LowCheck soonEngine Problems30–120 minutes for initial diagnosisP03D9Cylinder 7 Pressure Variation HighCheck soonEngine Problems30–120 minutes for initial diagnosisP03DACylinder 7 Combustion PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP03DBCylinder 8 Pressure Sensor CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP03DCCylinder 8 Pressure Sensor Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP03DDCylinder 8 Pressure Sensor Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP03DECylinder 8 Pressure Sensor Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP03DFCylinder 8 Pressure Sensor Circuit Intermittent/ErraticCheck soonEngine Problems30–120 minutes for initial diagnosisP03E0Cylinder 8 Pressure Too LowCheck soonEngine Problems30–120 minutes for initial diagnosisP03E1Cylinder 8 Pressure Too HighCheck soonEngine Problems30–120 minutes for initial diagnosisP03E2Cylinder 8 Pressure Variation LowCheck soonEngine Problems30–120 minutes for initial diagnosisP03E3Cylinder 8 Pressure Variation HighCheck soonEngine Problems30–120 minutes for initial diagnosisP03E4Cylinder 8 Combustion PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP03E5A Camshaft Position Actuator Position Sensor C Circuit Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP03E6A Camshaft Position Actuator Position Sensor C Range/Performance Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP03E7A Camshaft Position Actuator Position Sensor C Circuit Low Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP03E8A Camshaft Position Actuator Position Sensor C Circuit High Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP03E9A Camshaft Profile Actuator Position Sensor A Exceeded Learning LimitCheck soonEngine Problems30–120 minutes for initial diagnosisP03EAA Camshaft Profile Actuator Position Sensor B Exceeded Learning LimitCheck soonEngine Problems30–120 minutes for initial diagnosisP03EBA Camshaft Profile Actuator Position Sensor C Exceeded Learning LimitCheck soonEngine Problems30–120 minutes for initial diagnosisP03ECA Camshaft Profile Actuator C Control Circuit/Open Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP03EDA Camshaft Profile Actuator C Control Circuit Low Bank 1Check soonEngine Problems30–120 minutes for initial diagnosis