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9,253 diagnostic guides

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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 6769–6792 of 7353

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P2DC3Starter/Generator Phase Y Current Sensor CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2DC3 relates to starter/generator phase y current sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.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.P2DCDParticulate Filter B IncorrectCheck soonEmissions System30–120 minutes for initial diagnosisP2DCD relates to particulate filter b incorrect. 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.P2DD5Fuel Injection Quantity B Lower Than ExpectedCheck soonFuel System30–120 minutes for initial diagnosisP2DD5 relates to fuel injection quantity b lower than expected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DD6Fuel Injection Quantity B Higher Than ExpectedCheck soonFuel System30–120 minutes for initial diagnosisP2DD6 relates to fuel injection quantity b higher than expected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DD7Cold Start Fuel Injection Quantity B Lower Than ExpectedCheck soonFuel System30–120 minutes for initial diagnosisP2DD7 relates to cold start fuel injection quantity b lower than expected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DD8Cold Start Fuel Injection Quantity B Higher Than ExpectedCheck soonFuel System30–120 minutes for initial diagnosisP2DD8 relates to cold start fuel injection quantity b higher than expected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DD9EVAP System Leak Detection Pump Control Circuit PerformanceLow priorityEmissions System30–120 minutes for initial diagnosisP2DD9 relates to evap system leak detection pump control circuit performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DDAEVAP System Leak Detection Pump Performance/Stuck OffLow priorityEmissions System30–120 minutes for initial diagnosisP2DDA relates to evap system leak detection pump performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.