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 5737–5760 of 6682
P2BEEFuel Control System A Too Lean Bank 2Check soonFuel System30–120 minutes for initial diagnosisP2BEFFuel Control System A Too Rich Bank 2Check soonFuel System30–120 minutes for initial diagnosisP2BF0Fuel Control System B Too Lean Bank 1Check soonFuel System30–120 minutes for initial diagnosisP2BF1Fuel Control System B Too Rich Bank 1Check soonFuel System30–120 minutes for initial diagnosisP2BF2Fuel Control System B Too Lean Bank 2Check soonFuel System30–120 minutes for initial diagnosisP2BF3Fuel Control System B Too Rich Bank 2Check soonFuel System30–120 minutes for initial diagnosisP2BF4Exhaust Flow Control Valve A Position CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BF5Exhaust Flow Control Valve A Position Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BF6Exhaust Flow Control Valve A Position Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BF7Exhaust Flow Control Valve A Position Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BF8Exhaust Flow Control Valve B Control Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BF9Exhaust Flow Control Valve B Control Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BFAExhaust Flow Control Valve B Control Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BFBExhaust Flow Control Valve B Control PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BFCExhaust Flow Control Valve B Position CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BFDExhaust Flow Control Valve B Position Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BFEExhaust Flow Control Valve B Position Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BFFExhaust Flow Control Valve B Position Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2C00Fuel Pressure Regulator C PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2C01Fuel Pressure Regulator D PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2C02Fuel Pressure Regulator D Control Circuit/OpenCheck soonFuel System30–120 minutes for initial diagnosisP2C03Fuel Pressure Regulator D Control Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2C04Fuel Pressure Regulator D Control Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP2C05A Camshaft Profile Actuator Position Sensor A Circuit Bank 1Check soonEngine Problems30–120 minutes for initial diagnosis