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.
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These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.
Diagnostic codes
Showing 5593–5616 of 6682
P2B55B Camshaft Profile Actuator B Control Stuck On Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP2B56B Camshaft Profile Actuator B Control Stuck On Bank 2Check soonEngine Problems30–120 minutes for initial diagnosisP2B57Low Engine Oil Pressure - Camshaft Control DisabledCheck soonEngine Problems30–120 minutes for initial diagnosisP2B58Engine Coolant Flow Control Valve Motor Current HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2B59Engine Coolant Flow Control Valve Control Circuit/OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP2B5AEngine Coolant Flow Control Valve Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2B5BEngine Coolant Flow Control Valve Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2B5CEngine Coolant Flow Control Valve Supply Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2B5DEngine Coolant Flow Control Valve Position Sensor CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP2B5EEngine Coolant Flow Control Valve Position Sensor Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2B5FEngine Coolant Flow Control Valve Position Sensor Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2B60Engine Coolant Flow Control Valve Position Sensor Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2B61Engine Coolant Flow Control Valve Stuck ClosedCheck soonEngine Problems30–120 minutes for initial diagnosisP2B62Coolant Pump B Supply Voltage CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2B63Coolant Pump B Stuck/StalledCheck soonEngine Problems30–120 minutes for initial diagnosisP2B64Coolant Pump B Control Module OvertemperatureCheck soonEngine Problems30–120 minutes for initial diagnosisP2B66Coolant Pump D Control Circuit/OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP2B67Coolant Pump D Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2B68Coolant Pump D Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2B69Coolant Pump D Supply Voltage CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2B6ACoolant Pump D Stuck/StalledCheck soonEngine Problems30–120 minutes for initial diagnosisP2B6BCoolant Pump D Control Module OvertemperatureCheck soonEngine Problems30–120 minutes for initial diagnosisP2B6DEngine Coolant Flow Control Valve Position Sensor Circuit Intermittent/ErraticCheck soonEngine Problems30–120 minutes for initial diagnosisP2B6ETurbocharger/Supercharger A Temperature Sensor CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosis