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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 6265–6288 of 7353

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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.P2BD2Exhaust Aftertreatment System A LeakCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BD2 relates to exhaust aftertreatment system a leak. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BD3Exhaust Aftertreatment System B LeakCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2BD3 relates to exhaust aftertreatment system b leak. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BD4Motor Electronics Coolant Pump C Control Circuit/OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP2BD4 relates to motor electronics coolant pump c control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BD5Motor Electronics Coolant Pump C Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2BD5 relates to motor electronics coolant pump c control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BD6Motor Electronics Coolant Pump C Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2BD6 relates to motor electronics coolant pump c control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BD7Motor Electronics Coolant Pump C Control PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2BD7 relates to motor electronics coolant pump c control performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BD8Motor Electronics Coolant Temperature Sensor B CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP2BD8 relates to motor electronics coolant temperature sensor b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BD9Motor Electronics Coolant Temperature Sensor B Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2BD9 relates to motor electronics coolant temperature sensor b circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BDAMotor Electronics Coolant Temperature Sensor B Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2BDA relates to motor electronics coolant temperature sensor b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BDBMotor Electronics Coolant Temperature Sensor B Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2BDB relates to motor electronics coolant temperature sensor b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BDCMotor Electronics Coolant Temperature Sensor C CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP2BDC relates to motor electronics coolant temperature sensor c circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BDDMotor Electronics Coolant Temperature Sensor C Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2BDD relates to motor electronics coolant temperature sensor c circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BDEMotor Electronics Coolant Temperature Sensor C Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2BDE relates to motor electronics coolant temperature sensor c circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BDFMotor Electronics Coolant Temperature Sensor C Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2BDF relates to motor electronics coolant temperature sensor c 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.