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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 481–504 of 2110

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P05ACActive Grille Air Shutter B Position Sensor Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05AC relates to active grille air shutter b position sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P05ADActive Grille Air Shutter B Position Sensor Circuit IntermittentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05AD relates to active grille air shutter b position sensor circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P05AEActive Grille Air Shutter B Performance/Stuck OffCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05AE relates to active grille air shutter b performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P05AFActive Grille Air Shutter B Stuck OnCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05AF relates to active grille air shutter b stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P05B0Active Grille Air Shutter B Position Sensor Minimum/Maximum Stop PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05B0 relates to active grille air shutter b position sensor minimum/maximum stop performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P05B1Active Grille Air Shutter B Control Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05B1 relates to active grille air shutter b control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P05B2Active Grille Air Shutter B Control Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05B2 relates to active grille air shutter b control circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P05B3Active Grille Air Shutter B Control Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05B3 relates to active grille air shutter b control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P05B4Active Grille Air Shutter B Control Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05B4 relates to active grille air shutter b control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P05B8Restraint Deployment Signal Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05B8 relates to restraint deployment signal circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P05B9Restraint Deployment Signal Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05B9 relates to restraint deployment signal circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P05BARestraint Deployment Signal Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05BA relates to restraint deployment signal circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P05BBRestraints DeployedCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05BB relates to restraints deployed. Check the fault conditions and vehicle-specific procedure before replacing parts.P05BCStop-Start Mode Switch Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05BC relates to stop-start mode switch circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P05BDStop-Start Mode Switch Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05BD relates to stop-start mode switch circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P05BEStop-Start Mode Switch Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05BE relates to stop-start mode switch circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P05BFStop-Start Mode Switch Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05BF relates to stop-start mode switch circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P05C0Active Grille Air Shutter Module A Over TemperatureUrgentSensors & Electronics30–120 minutes for initial diagnosisP05C0 relates to active grille air shutter module a over temperature. Check the fault conditions and vehicle-specific procedure before replacing parts.P05C1Active Grille Air Shutter Module B Over TemperatureUrgentSensors & Electronics30–120 minutes for initial diagnosisP05C1 relates to active grille air shutter module b over temperature. Check the fault conditions and vehicle-specific procedure before replacing parts.P05C7Economy Mode Switch Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05C7 relates to economy mode switch circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P05C8Economy Mode Switch Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05C8 relates to economy mode switch circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P05C9Economy Mode Switch Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05C9 relates to economy mode switch circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P05CAEconomy Mode Switch Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05CA relates to economy mode switch circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P05CBVehicle Hardware IncompatibilityCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05CB relates to vehicle hardware incompatibility. Check the fault conditions and vehicle-specific procedure before replacing parts.