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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 1321–1344 of 1570

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P2BC2Charge Air Cooler Coolant Pump A Supply Voltage CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BC2 relates to charge air cooler coolant pump a supply voltage circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BC4Battery Charging System Positive Contactor B CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BC4 relates to battery charging system positive contactor b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BC5Battery Charging System Positive Contactor B Stuck ClosedCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BC5 relates to battery charging system positive contactor b stuck closed. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BC6Battery Charging System Positive Contactor B Stuck OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BC6 relates to battery charging system positive contactor b stuck open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BC7Battery Charging System Positive Contactor B Control Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BC7 relates to battery charging system positive contactor b control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BC8Battery Charging System Positive Contactor B Control Circuit Range/PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BC8 relates to battery charging system positive contactor b control circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BC9Battery Charging System Positive Contactor B Control Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BC9 relates to battery charging system positive contactor b control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BCABattery Charging System Positive Contactor B Control Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BCA relates to battery charging system positive contactor b control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BCBBattery Charging System Negative Contactor B CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BCB relates to battery charging system negative contactor b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BCCBattery Charging System Negative Contactor B Stuck ClosedCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BCC relates to battery charging system negative contactor b stuck closed. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BCDBattery Charging System Negative Contactor B Stuck OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BCD relates to battery charging system negative contactor b stuck open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BCEBattery Charging System Negative Contactor B Control Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BCE relates to battery charging system negative contactor b control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BCFBattery Charging System Negative Contactor B Control Circuit Range/PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BCF relates to battery charging system negative contactor b control circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BD0Battery Charging System Negative Contactor B Control Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BD0 relates to battery charging system negative contactor b control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BD1Battery Charging System Negative Contactor B Control Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BD1 relates to battery charging system negative contactor b control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BE0Hybrid/EV Battery Coolant Level Sensor Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BE0 relates to hybrid/ev battery coolant level sensor circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BE1Hybrid/EV Battery Coolant Level Sensor Range/PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BE1 relates to hybrid/ev battery coolant level sensor range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BE2Hybrid/EV Battery Coolant Level Sensor Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BE2 relates to hybrid/ev battery coolant level sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BE3Hybrid/EV Battery Coolant Level Sensor Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BE3 relates to hybrid/ev battery coolant level sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BE4Hybrid/EV Battery Pack Current Sensor C CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BE4 relates to hybrid/ev battery pack current sensor c circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BE5Hybrid/EV Battery Pack Current Sensor C Circuit Range/PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BE5 relates to hybrid/ev battery pack current sensor c circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BE6Hybrid/EV Battery Pack Current Sensor C LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BE6 relates to hybrid/ev battery pack current sensor c low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BE7Hybrid/EV Battery Pack Current Sensor C HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BE7 relates to hybrid/ev battery pack current sensor c high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BE8Hybrid/EV Battery Precharge Contactor Control Circuit B OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2BE8 relates to hybrid/ev battery precharge contactor control circuit b open. Check the fault conditions and vehicle-specific procedure before replacing parts.