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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

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 3049–3072 of 9253

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P0A98Hybrid/EV Battery Pack Cooling Fan 2 Stuck OnUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0A98 concerns hybrid/ev battery pack cooling fan 2 stuck on. Learn what this fault indicates and where to begin diagnosis.P0A99Hybrid/EV Battery Pack Cooling Fan 2 Control Circuit LowUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0A99 concerns hybrid/ev battery pack cooling fan 2 control circuit low. Learn what this fault indicates and where to begin diagnosis.P0A9AHybrid/EV Battery Pack Cooling Fan 2 Control Circuit HighUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0A9A concerns hybrid/ev battery pack cooling fan 2 control circuit high. Learn what this fault indicates and where to begin diagnosis.P0A9BHybrid/EV Battery Temperature Sensor A CircuitCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A9B concerns hybrid/ev battery temperature sensor a circuit. Learn what this fault indicates and where to begin diagnosis.P0A9CHybrid/EV Battery Temperature Sensor A Circuit Range/PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A9C concerns hybrid/ev battery temperature sensor a circuit range/performance. Learn what this fault indicates and where to begin diagnosis.P0A9DHybrid/EV Battery Temperature Sensor A Circuit LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A9D concerns hybrid/ev battery temperature sensor a circuit low. Learn what this fault indicates and where to begin diagnosis.P0A9EHybrid/EV Battery Temperature Sensor A Circuit HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A9E concerns hybrid/ev battery temperature sensor a circuit high. Learn what this fault indicates and where to begin diagnosis.P0A9FHybrid/EV Battery Temperature Sensor A Circuit Intermittent/ErraticCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A9F concerns hybrid/ev battery temperature sensor a circuit intermittent/erratic. Learn what this fault indicates and where to begin diagnosis.P0AA0Hybrid/EV Battery Positive Contactor CircuitCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AA0 concerns hybrid/ev battery positive contactor circuit. Learn what this fault indicates and where to begin diagnosis.P0AA1Hybrid/EV Battery Positive Contactor Circuit Stuck ClosedCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AA1 concerns hybrid/ev battery positive contactor circuit stuck closed. Learn what this fault indicates and where to begin diagnosis.P0AA2Hybrid/EV Battery Positive Contactor Circuit Stuck OpenCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AA2 concerns hybrid/ev battery positive contactor circuit stuck open. Learn what this fault indicates and where to begin diagnosis.P0AA3Hybrid/EV Battery Negative Contactor CircuitCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AA3 concerns hybrid/ev battery negative contactor circuit. Learn what this fault indicates and where to begin diagnosis.P0AA4Hybrid/EV Battery Negative Contactor Circuit Stuck ClosedCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AA4 concerns hybrid/ev battery negative contactor circuit stuck closed. Learn what this fault indicates and where to begin diagnosis.P0AA5Hybrid/EV Battery Negative Contactor Circuit Stuck OpenCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AA5 concerns hybrid/ev battery negative contactor circuit stuck open. Learn what this fault indicates and where to begin diagnosis.P0AA6Hybrid/EV Battery Voltage System Isolation FaultUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0AA6 concerns hybrid/ev battery voltage system isolation fault. Learn what this fault indicates and where to begin diagnosis.P0AA7Hybrid/EV Battery Voltage Isolation Sensor CircuitUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0AA7 concerns hybrid/ev battery voltage isolation sensor circuit. Learn what this fault indicates and where to begin diagnosis.P0AA8Hybrid/EV Battery Voltage Isolation Sensor Circuit Range/PerformanceUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0AA8 concerns hybrid/ev battery voltage isolation sensor circuit range/performance. Learn what this fault indicates and where to begin diagnosis.P0AA9Hybrid/EV Battery Voltage Isolation Sensor Circuit LowUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0AA9 concerns hybrid/ev battery voltage isolation sensor circuit low. Learn what this fault indicates and where to begin diagnosis.P0AAAHybrid/EV Battery Voltage Isolation Sensor Circuit HighUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0AAA concerns hybrid/ev battery voltage isolation sensor circuit high. Learn what this fault indicates and where to begin diagnosis.P0AABHybrid/EV Battery Voltage Isolation Sensor Circuit Intermittent/ErraticUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0AAB concerns hybrid/ev battery voltage isolation sensor circuit intermittent/erratic. Learn what this fault indicates and where to begin diagnosis.P0AACHybrid/EV Battery Pack Air Temperature Sensor A CircuitUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0AAC concerns hybrid/ev battery pack air temperature sensor a circuit. Learn what this fault indicates and where to begin diagnosis.P0AADHybrid/EV Battery Pack Air Temperature Sensor A Circuit Range/PerformanceUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0AAD concerns hybrid/ev battery pack air temperature sensor a circuit range/performance. Learn what this fault indicates and where to begin diagnosis.P0AAEHybrid/EV Battery Pack Air Temperature Sensor A Circuit LowUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0AAE concerns hybrid/ev battery pack air temperature sensor a circuit low. Learn what this fault indicates and where to begin diagnosis.P0AAFHybrid/EV Battery Pack Air Temperature Sensor A Circuit HighUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0AAF concerns hybrid/ev battery pack air temperature sensor a circuit high. Learn what this fault indicates and where to begin diagnosis.