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9,253 diagnostic guides

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Find codes by symptomChoose what you notice to search matching code guides.

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.

Check soon P · Powertrain Clear all

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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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These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.

Diagnostic codes

Showing 5977–6000 of 6682

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P2CE8Particulate Filter Pressure Sensor C Circuit HighCheck soonEmissions System30–120 minutes for initial diagnosisP2CE8 relates to particulate filter pressure sensor c circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CE9Particulate Filter Pressure Sensor C Circuit Intermittent/ErraticCheck soonEmissions System30–120 minutes for initial diagnosisP2CE9 relates to particulate filter pressure sensor c circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CEAParticulate Filter Pressure Sensor D CircuitCheck soonEmissions System30–120 minutes for initial diagnosisP2CEA relates to particulate filter pressure sensor d circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CEBParticulate Filter Pressure Sensor D Circuit Range/PerformanceCheck soonEmissions System30–120 minutes for initial diagnosisP2CEB relates to particulate filter pressure sensor d circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CECParticulate Filter Pressure Sensor D Circuit LowCheck soonEmissions System30–120 minutes for initial diagnosisP2CEC relates to particulate filter pressure sensor d circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CEDParticulate Filter Pressure Sensor D Circuit HighCheck soonEmissions System30–120 minutes for initial diagnosisP2CED relates to particulate filter pressure sensor d circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CEEParticulate Filter Pressure Sensor D Circuit Intermittent/ErraticCheck soonEmissions System30–120 minutes for initial diagnosisP2CEE relates to particulate filter pressure sensor d circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CEFAuxiliary Thermostat A Stuck OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP2CEF relates to auxiliary thermostat a stuck open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CF0Auxiliary Thermostat A Stuck ClosedCheck soonEngine Problems30–120 minutes for initial diagnosisP2CF0 relates to auxiliary thermostat a stuck closed. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CF1Auxiliary Thermostat B Stuck OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP2CF1 relates to auxiliary thermostat b stuck open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CF2Auxiliary Thermostat B Stuck ClosedCheck soonEngine Problems30–120 minutes for initial diagnosisP2CF2 relates to auxiliary thermostat b stuck closed. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CF3Hybrid/EV Battery Pack Coolant Pump A UnderspeedCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CF3 relates to hybrid/ev battery pack coolant pump a underspeed. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CF4Hybrid/EV Battery Pack Coolant Pump B Supply Voltage CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CF4 relates to hybrid/ev battery pack coolant pump b supply voltage circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CF5Hybrid/EV Battery Pack Coolant Pump B Stuck/StalledCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CF5 relates to hybrid/ev battery pack coolant pump b stuck/stalled. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CF7Hybrid/EV Battery Pack Coolant Pump B UnderspeedCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CF7 relates to hybrid/ev battery pack coolant pump b underspeed. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CF8Engine Coolant Bypass Valve D Control Circuit Driver Current/Temperature Too HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2CF8 relates to engine coolant bypass valve d control circuit driver current/temperature too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CF9Belt Integrated Starter Generator Belt Tensioner Control Circuit/OpenCheck soonEmissions System30–120 minutes for initial diagnosisP2CF9 relates to belt integrated starter generator belt tensioner control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CFABelt Integrated Starter Generator Belt Tensioner Control Circuit LowCheck soonEmissions System30–120 minutes for initial diagnosisP2CFA relates to belt integrated starter generator belt tensioner control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CFBBelt Integrated Starter Generator Belt Tensioner Control Circuit HighCheck soonEmissions System30–120 minutes for initial diagnosisP2CFB relates to belt integrated starter generator belt tensioner control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CFFA/C Clutch Control Circuit Driver Current/Temperature Too HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP2CFF relates to a/c clutch control circuit driver current/temperature too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D00Motor Electronics Coolant Pump A Stuck/StalledCheck soonEngine Problems30–120 minutes for initial diagnosisP2D00 relates to motor electronics coolant pump a stuck/stalled. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D02Motor Electronics Coolant Pump A UnderspeedCheck soonEngine Problems30–120 minutes for initial diagnosisP2D02 relates to motor electronics coolant pump a underspeed. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D03Motor Electronics Coolant Pump A Supply Voltage CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2D03 relates to motor electronics coolant pump a supply voltage circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D04Motor Electronics Coolant Pump A Control Module OvertemperatureCheck soonEngine Problems30–120 minutes for initial diagnosisP2D04 relates to motor electronics coolant pump a control module overtemperature. Check the fault conditions and vehicle-specific procedure before replacing parts.