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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 1489–1512 of 1570

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P2DC4Starter/Generator Phase Y Current Sensor Circuit Range/PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2DC4 relates to starter/generator phase y current sensor circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DC5Starter/Generator Phase Z Current Sensor CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2DC5 relates to starter/generator phase z current sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DC6Starter/Generator Phase Z Current Sensor Circuit Range/PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2DC6 relates to starter/generator phase z current sensor circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DC7Starter/Generator Excitation CurrentCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2DC7 relates to starter/generator excitation current. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DC8Starter/Generator Excitation Current LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2DC8 relates to starter/generator excitation current low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DC9Starter/Generator Excitation Current HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2DC9 relates to starter/generator excitation current high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DCAStarter/Generator Excitation Current IntermittentCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2DCA relates to starter/generator excitation current intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DCBStarter/Generator Phase X-Y-Z Current Sensor CorrelationCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2DCB relates to starter/generator phase x-y-z current sensor correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DCCStarter/Generator Position Sensor CorrelationCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2DCC relates to starter/generator position sensor correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DCEControl Pilot Charging Switch B Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2DCE relates to control pilot charging switch b circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DCFControl Pilot Charging Switch B Range/PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2DCF relates to control pilot charging switch b range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DD0Control Pilot Charging Switch B Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2DD0 relates to control pilot charging switch b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DD1Control Pilot Charging Switch B Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2DD1 relates to control pilot charging switch b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DD2Control Pilot Charging Switch B Intermittent/ErraticCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2DD2 relates to control pilot charging switch b intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DD3Control Pilot Charging Switch B Stuck OffCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2DD3 relates to control pilot charging switch b stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DD4Control Pilot Charging Switch B Stuck OnCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2DD4 relates to control pilot charging switch b stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DFACoolant Pump E Supply Voltage CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2DFA relates to coolant pump e supply voltage circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DFCHybrid/EV Battery Coolant Leak DetectedCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2DFC relates to hybrid/ev battery coolant leak detected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2E1ADrive Motor A Inverter Voltage Sensor A/B CorrelationCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2E1A relates to drive motor a inverter voltage sensor a/b correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P2E29Drive Motor A Excitation Current Sensor Circuit Low VoltageCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2E29 relates to drive motor a excitation current sensor circuit low voltage. Check the fault conditions and vehicle-specific procedure before replacing parts.P2E2ADrive Motor A Excitation Current Sensor Circuit High VoltageCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2E2A relates to drive motor a excitation current sensor circuit high voltage. Check the fault conditions and vehicle-specific procedure before replacing parts.P2E2CBattery Charger A Module Supply Voltage PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2E2C relates to battery charger a module supply voltage performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2E2DBattery Charger A Module Supply Voltage LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2E2D relates to battery charger a module supply voltage low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2E2EBattery Charger A Module Supply Voltage HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2E2E relates to battery charger a module supply voltage high. Check the fault conditions and vehicle-specific procedure before replacing parts.