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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.

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 6481–6504 of 7353

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P2CA3Charge Air Cooler Coolant Pump Sense Circuit PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2CA3 relates to charge air cooler coolant pump sense circuit performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CA4Particulate Filter Pressure Sensor Signals Swapped A/BCheck soonEmissions System30–120 minutes for initial diagnosisP2CA4 relates to particulate filter pressure sensor signals swapped a/b. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CA5DC/DC Converter Temperature Sensor E CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2CA5 relates to dc/dc converter temperature sensor e circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CA6DC/DC Converter Temperature Sensor E Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2CA6 relates to dc/dc converter temperature sensor e circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CA7DC/DC Converter Temperature Sensor E Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2CA7 relates to dc/dc converter temperature sensor e circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CA8DC/DC Converter Temperature Sensor E Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2CA8 relates to dc/dc converter temperature sensor e circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CA9DC/DC Converter Temperature Sensor F CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2CA9 relates to dc/dc converter temperature sensor f circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CAADC/DC Converter Temperature Sensor F Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2CAA relates to dc/dc converter temperature sensor f circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CABDC/DC Converter Temperature Sensor F Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2CAB relates to dc/dc converter temperature sensor f circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CACDC/DC Converter Temperature Sensor F Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2CAC relates to dc/dc converter temperature sensor f circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CADCharge Air Cooler Coolant Pump B Control Circuit/OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP2CAD relates to charge air cooler coolant pump b control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CAECharge Air Cooler Coolant Pump B Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2CAE relates to charge air cooler coolant pump b control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CAFCharge Air Cooler Coolant Pump B Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2CAF relates to charge air cooler coolant pump b control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CB0Charge Air Cooler Coolant Pump B PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2CB0 relates to charge air cooler coolant pump b performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CB1Charge Air Cooler Coolant Pump B Overspeed/Air In SystemUrgentEngine Problems30–120 minutes for initial diagnosisP2CB1 relates to charge air cooler coolant pump b overspeed/air in system. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CB2Charge Air Cooler Coolant Pump B UnderspeedCheck soonEngine Problems30–120 minutes for initial diagnosisP2CB2 relates to charge air cooler coolant pump b underspeed. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CB3Charge Air Cooler Coolant Pump B Stuck/StalledCheck soonEngine Problems30–120 minutes for initial diagnosisP2CB3 relates to charge air cooler coolant pump b stuck/stalled. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CB4Charge Air Cooler Coolant Pump B Supply Voltage CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CB4 relates to charge air cooler coolant pump b supply voltage circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CB5Charge Air Cooler Coolant Pump B Control Module OvertemperatureCheck soonEngine Problems30–120 minutes for initial diagnosisP2CB5 relates to charge air cooler coolant pump b control module overtemperature. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CB6Turbocharger/Supercharger B Boost System PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2CB6 relates to turbocharger/supercharger b boost system performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CB7Turbocharger/Supercharger Boost Pressure B Not Detected – MechanicalCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2CB7 relates to turbocharger/supercharger boost pressure b not detected – mechanical. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CB8Turbocharger/Supercharger Boost Pressure B Too High – MechanicalCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2CB8 relates to turbocharger/supercharger boost pressure b too high – mechanical. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CB9Fan 2 UnderspeedCheck soonEngine Problems30–120 minutes for initial diagnosisP2CB9 relates to fan 2 underspeed. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CBAFan 2 OverspeedUrgentEngine Problems30–120 minutes for initial diagnosisP2CBA relates to fan 2 overspeed. Check the fault conditions and vehicle-specific procedure before replacing parts.