Diagnostic library

Find an OBD2 code

Search the code from your scanner, then narrow the library by system, severity, or code family.

9,253 diagnostic guides

Sort

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.

Check soon P · Powertrain Clear all

Quick browse

Choose a vehicle system

Engine1049 Emissions515 Fuel1016 Sensors & Electronics2110 Transmission866 Electrical & Charging1797 Body & Restraints193 Chassis & Brakes479 Network & Communication1228

FiltersSeverity · family

Severity

All severities9253 Low priority305 Check soon8256 Urgent621

Code family

All families9253 P · Powertrain7353 B · Body193 C · Chassis479 U · Network1228

Vehicle coverage

These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.

Diagnostic codes

Showing 1081–1104 of 6682

Most searched first

P05A4Active Grille Air Shutter A Control Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05A4 relates to active grille air shutter a control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P05A5Active Grille Air Shutter A Control Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05A5 relates to active grille air shutter a control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P05A6Active Grille Air Shutter A Supply Voltage Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP05A6 relates to active grille air shutter a supply voltage circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P05A7Active Grille Air Shutter A Supply Voltage Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP05A7 relates to active grille air shutter a supply voltage circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P05A8Active Grille Air Shutter A Supply Voltage Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP05A8 relates to active grille air shutter a supply voltage circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P05A9Active Grille Air Shutter B Position Sensor CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05A9 relates to active grille air shutter b position sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P05AAActive Grille Air Shutter B Position Sensor Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05AA relates to active grille air shutter b position sensor circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P05ABActive Grille Air Shutter B Position Sensor Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05AB relates to active grille air shutter b position sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.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.P05B5Active Grille Air Shutter B Supply Voltage Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP05B5 relates to active grille air shutter b supply voltage circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P05B6Active Grille Air Shutter B Supply Voltage Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP05B6 relates to active grille air shutter b supply voltage circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P05B7Active Grille Air Shutter B Supply Voltage Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP05B7 relates to active grille air shutter b supply voltage circuit high. 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.