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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 385–408 of 1049
P2090B Camshaft Position Actuator Control Circuit Low Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP2091B Camshaft Position Actuator Control Circuit High Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP2092A Camshaft Position Actuator Control Circuit Low Bank 2Check soonEngine Problems30–120 minutes for initial diagnosisP2093A Camshaft Position Actuator Control Circuit High Bank 2Check soonEngine Problems30–120 minutes for initial diagnosisP2094B Camshaft Position Actuator Control Circuit Low Bank 2Check soonEngine Problems30–120 minutes for initial diagnosisP2095B Camshaft Position Actuator Control Circuit High Bank 2Check soonEngine Problems30–120 minutes for initial diagnosisP20B1Reductant Heater Coolant Control Valve Circuit/OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP20B2Reductant Heater Coolant Control Valve Performance/Stuck OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP20B3Reductant Heater Coolant Control Valve Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP20B4Reductant Heater Coolant Control Valve Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2182Engine Coolant Temperature Sensor 2 CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP2183Engine Coolant Temperature Sensor 2 Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2184Engine Coolant Temperature Sensor 2 Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2185Engine Coolant Temperature Sensor 2 Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2186Engine Coolant Temperature Sensor 2 Circuit Intermittent/ErraticCheck soonEngine Problems30–120 minutes for initial diagnosisP2336Cylinder 1 Above Knock/Combustion Vibration Sensor ThresholdCheck soonEngine Problems30–120 minutes for initial diagnosisP2337Cylinder 2 Above Knock/Combustion Vibration Sensor ThresholdCheck soonEngine Problems30–120 minutes for initial diagnosisP2338Cylinder 3 Above Knock/Combustion Vibration Sensor ThresholdCheck soonEngine Problems30–120 minutes for initial diagnosisP2339Cylinder 4 Above Knock/Combustion Vibration Sensor ThresholdCheck soonEngine Problems30–120 minutes for initial diagnosisP2340Cylinder 5 Above Knock/Combustion Vibration Sensor ThresholdCheck soonEngine Problems30–120 minutes for initial diagnosisP2341Cylinder 6 Above Knock/Combustion Vibration Sensor ThresholdCheck soonEngine Problems30–120 minutes for initial diagnosisP2342Cylinder 7 Above Knock/Combustion Vibration Sensor ThresholdCheck soonEngine Problems30–120 minutes for initial diagnosisP2343Cylinder 8 Above Knock/Combustion Vibration Sensor ThresholdCheck soonEngine Problems30–120 minutes for initial diagnosisP2344Cylinder 9 Above Knock/Combustion Vibration Sensor ThresholdCheck soonEngine Problems30–120 minutes for initial diagnosis