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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.

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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 1369–1392 of 1570

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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.P2CC1Generator Voltage Sense Circuit BCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CC1 relates to generator voltage sense circuit b. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CC2Generator Voltage Sense Circuit B Range/PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CC2 relates to generator voltage sense circuit b range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CC3Generator Voltage Sense Circuit B LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CC3 relates to generator voltage sense circuit b low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CC4Generator Voltage Sense Circuit B HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CC4 relates to generator voltage sense circuit b high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CC5Generator Inverter Power Supply B Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CC5 relates to generator inverter power supply b circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CC6Generator Inverter Power Supply B Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CC6 relates to generator inverter power supply b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CC7Generator Inverter Power Supply B Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CC7 relates to generator inverter power supply b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CCCHybrid/EV Battery Pack G DeteriorationCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CCC relates to hybrid/ev battery pack g deterioration. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CCDHybrid/EV Battery Pack H DeteriorationCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CCD relates to hybrid/ev battery pack h deterioration. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CCEHybrid/EV Battery Pack I DeteriorationCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CCE relates to hybrid/ev battery pack i deterioration. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CCFHybrid/EV Battery Pack J DeteriorationCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CCF relates to hybrid/ev battery pack j deterioration. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CD0Hybrid/EV Battery Pack K DeteriorationCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CD0 relates to hybrid/ev battery pack k deterioration. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CD1Hybrid/EV Battery Pack L DeteriorationCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CD1 relates to hybrid/ev battery pack l deterioration. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CD2Hybrid/EV Battery Pack M DeteriorationCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CD2 relates to hybrid/ev battery pack m deterioration. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CD3Hybrid/EV Battery Pack N DeteriorationCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2CD3 relates to hybrid/ev battery pack n deterioration. 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.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.P2D08Motor Electronics Coolant Pump B Supply Voltage CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2D08 relates to motor electronics coolant pump b supply voltage circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D0DMotor Electronics Coolant Pump C Supply Voltage CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2D0D relates to motor electronics coolant pump c supply voltage circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D2BHybrid/EV Battery Pack Coolant Temperature Sensor A/B CorrelationCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2D2B relates to hybrid/ev battery pack coolant temperature sensor a/b correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.