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 4393–4416 of 7353
P2364Cylinder 11 Pressure Variation HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2365Cylinder 11 Combustion PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2366Cylinder 12 Pressure Sensor CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP2367Cylinder 12 Pressure Sensor Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2368Cylinder 12 Pressure Sensor Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2369Cylinder 12 Pressure Sensor Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP236ACylinder 12 Pressure Sensor Circuit Intermittent/ErraticCheck soonEngine Problems30–120 minutes for initial diagnosisP236BCylinder 12 Pressure Too LowCheck soonEngine Problems30–120 minutes for initial diagnosisP236CCylinder 12 Pressure Too HighCheck soonEngine Problems30–120 minutes for initial diagnosisP236DCylinder 12 Pressure Variation LowCheck soonEngine Problems30–120 minutes for initial diagnosisP236ECylinder 12 Pressure Variation HighCheck soonEngine Problems30–120 minutes for initial diagnosisP236FCylinder 12 Combustion PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2370Fuel Volume Regulator B Control Circuit/OpenCheck soonFuel System30–120 minutes for initial diagnosisP2371Fuel Volume Regulator B Control Circuit PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2372Fuel Volume Regulator B Control Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2373Fuel Volume Regulator B Control Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP2374Turbocharger/Supercharger Inlet Pressure Sensor B CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2375Turbocharger/Supercharger Inlet Pressure Sensor B Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2376Turbocharger/Supercharger Inlet Pressure Sensor B Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2377Turbocharger/Supercharger Inlet Pressure Sensor B Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2378Turbocharger/Supercharger Inlet Pressure Sensor B Circuit Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2379O2 Sensor Out of Range During Deceleration Bank 2 Sensor 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP237AO2 Sensor Exhaust Sample Error Bank 1 Sensor 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP237BO2 Sensor Exhaust Sample Error Bank 2 Sensor 2Check soonSensors & Electronics30–120 minutes for initial diagnosis