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Rough idle or shakingVibration while stopped Hard to startLong cranking or no-start Engine stallsCuts out at idle or on the road Hesitates or loses powerSlow response when accelerating Battery light is onCharging system warning Harsh 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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Engine1049 Emissions515 Fuel1016 Sensors & Electronics2110 Transmission866 Electrical & Charging1797 Body & Restraints193 Chassis & Brakes479 Network & Communication1228

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All severities9253 Low priority305 Check soon8256 Urgent621

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All families9253 P · Powertrain7353 B · Body193 C · Chassis479 U · Network1228

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Diagnostic codes

Showing 361–384 of 987

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P20B3Reductant Heater Coolant Control Valve Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP20B3 relates to reductant heater coolant control valve circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P20B4Reductant Heater Coolant Control Valve Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP20B4 relates to reductant heater coolant control valve circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2182Engine Coolant Temperature Sensor 2 CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP2182 relates to engine coolant temperature sensor 2 circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2183Engine Coolant Temperature Sensor 2 Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2183 relates to engine coolant temperature sensor 2 circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2184Engine Coolant Temperature Sensor 2 Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2184 relates to engine coolant temperature sensor 2 circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2185Engine Coolant Temperature Sensor 2 Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2185 relates to engine coolant temperature sensor 2 circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2186Engine Coolant Temperature Sensor 2 Circuit Intermittent/ErraticCheck soonEngine Problems30–120 minutes for initial diagnosisP2186 relates to engine coolant temperature sensor 2 circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P2336Cylinder 1 Above Knock/Combustion Vibration Sensor ThresholdCheck soonEngine Problems30–120 minutes for initial diagnosisP2336 relates to cylinder 1 above knock/combustion vibration sensor threshold. Check the fault conditions and vehicle-specific procedure before replacing parts.P2337Cylinder 2 Above Knock/Combustion Vibration Sensor ThresholdCheck soonEngine Problems30–120 minutes for initial diagnosisP2337 relates to cylinder 2 above knock/combustion vibration sensor threshold. Check the fault conditions and vehicle-specific procedure before replacing parts.P2338Cylinder 3 Above Knock/Combustion Vibration Sensor ThresholdCheck soonEngine Problems30–120 minutes for initial diagnosisP2338 relates to cylinder 3 above knock/combustion vibration sensor threshold. Check the fault conditions and vehicle-specific procedure before replacing parts.P2339Cylinder 4 Above Knock/Combustion Vibration Sensor ThresholdCheck soonEngine Problems30–120 minutes for initial diagnosisP2339 relates to cylinder 4 above knock/combustion vibration sensor threshold. Check the fault conditions and vehicle-specific procedure before replacing parts.P2340Cylinder 5 Above Knock/Combustion Vibration Sensor ThresholdCheck soonEngine Problems30–120 minutes for initial diagnosisP2340 relates to cylinder 5 above knock/combustion vibration sensor threshold. Check the fault conditions and vehicle-specific procedure before replacing parts.P2341Cylinder 6 Above Knock/Combustion Vibration Sensor ThresholdCheck soonEngine Problems30–120 minutes for initial diagnosisP2341 relates to cylinder 6 above knock/combustion vibration sensor threshold. Check the fault conditions and vehicle-specific procedure before replacing parts.P2342Cylinder 7 Above Knock/Combustion Vibration Sensor ThresholdCheck soonEngine Problems30–120 minutes for initial diagnosisP2342 relates to cylinder 7 above knock/combustion vibration sensor threshold. Check the fault conditions and vehicle-specific procedure before replacing parts.P2343Cylinder 8 Above Knock/Combustion Vibration Sensor ThresholdCheck soonEngine Problems30–120 minutes for initial diagnosisP2343 relates to cylinder 8 above knock/combustion vibration sensor threshold. Check the fault conditions and vehicle-specific procedure before replacing parts.P2344Cylinder 9 Above Knock/Combustion Vibration Sensor ThresholdCheck soonEngine Problems30–120 minutes for initial diagnosisP2344 relates to cylinder 9 above knock/combustion vibration sensor threshold. Check the fault conditions and vehicle-specific procedure before replacing parts.P2345Cylinder 10 Above Knock/Combustion Vibration Sensor ThresholdCheck soonEngine Problems30–120 minutes for initial diagnosisP2345 relates to cylinder 10 above knock/combustion vibration sensor threshold. Check the fault conditions and vehicle-specific procedure before replacing parts.P2346Cylinder 11 Above Knock/Combustion Vibration Sensor ThresholdCheck soonEngine Problems30–120 minutes for initial diagnosisP2346 relates to cylinder 11 above knock/combustion vibration sensor threshold. Check the fault conditions and vehicle-specific procedure before replacing parts.P2347Cylinder 12 Above Knock/Combustion Vibration Sensor ThresholdCheck soonEngine Problems30–120 minutes for initial diagnosisP2347 relates to cylinder 12 above knock/combustion vibration sensor threshold. Check the fault conditions and vehicle-specific procedure before replacing parts.P2348Cylinder 9 Pressure Sensor CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP2348 relates to cylinder 9 pressure sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2349Cylinder 9 Pressure Sensor Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2349 relates to cylinder 9 pressure sensor circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P234ACylinder 9 Pressure Sensor Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP234A relates to cylinder 9 pressure sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P234BCylinder 9 Pressure Sensor Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP234B relates to cylinder 9 pressure sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P234CCylinder 9 Pressure Sensor Circuit Intermittent/ErraticCheck soonEngine Problems30–120 minutes for initial diagnosisP234C relates to cylinder 9 pressure sensor circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.