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.

Electrical & Charging System 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 361–384 of 1797

Most searched first

P0AEFDrive Motor Inverter Temperature Sensor A Circuit LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AEF concerns drive motor inverter temperature sensor a circuit low. Learn what this fault indicates and where to begin diagnosis.P0AF0Drive Motor Inverter Temperature Sensor A Circuit HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AF0 concerns drive motor inverter temperature sensor a circuit high. Learn what this fault indicates and where to begin diagnosis.P0AF1Drive Motor Inverter Temperature Sensor A Circuit Intermittent/ErraticCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AF1 concerns drive motor inverter temperature sensor a circuit intermittent/erratic. Learn what this fault indicates and where to begin diagnosis.P0AF2Drive Motor Inverter Temperature Sensor B CircuitCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AF2 concerns drive motor inverter temperature sensor b circuit. Learn what this fault indicates and where to begin diagnosis.P0AF3Drive Motor Inverter Temperature Sensor B Circuit Range/PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AF3 concerns drive motor inverter temperature sensor b circuit range/performance. Learn what this fault indicates and where to begin diagnosis.P0AF4Drive Motor Inverter Temperature Sensor B Circuit LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AF4 concerns drive motor inverter temperature sensor b circuit low. Learn what this fault indicates and where to begin diagnosis.P0AF5Drive Motor Inverter Temperature Sensor B Circuit HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AF5 concerns drive motor inverter temperature sensor b circuit high. Learn what this fault indicates and where to begin diagnosis.P0AF6Drive Motor Inverter Temperature Sensor B Circuit Intermittent/ErraticCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AF6 concerns drive motor inverter temperature sensor b circuit intermittent/erratic. Learn what this fault indicates and where to begin diagnosis.P0AF714 Volt Power Module Internal Temperature Too HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AF7 concerns 14 volt power module internal temperature too high. Learn what this fault indicates and where to begin diagnosis.P0AF8Hybrid/EV Battery System VoltageCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AF8 concerns hybrid/ev battery system voltage. Learn what this fault indicates and where to begin diagnosis.P0AF9Hybrid/EV Battery System Voltage UnstableCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AF9 concerns hybrid/ev battery system voltage unstable. Learn what this fault indicates and where to begin diagnosis.P0AFAHybrid/EV Battery System Voltage LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AFA concerns hybrid/ev battery system voltage low. Learn what this fault indicates and where to begin diagnosis.P0AFBHybrid/EV Battery System Voltage HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AFB concerns hybrid/ev battery system voltage high. Learn what this fault indicates and where to begin diagnosis.P0AFCHybrid/EV Battery Pack Sensor ModuleUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0AFC concerns hybrid/ev battery pack sensor module. Learn what this fault indicates and where to begin diagnosis.P0AFDHybrid/EV Battery Pack Temperature Too LowUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0AFD concerns hybrid/ev battery pack temperature too low. Learn what this fault indicates and where to begin diagnosis.P0AFEHybrid/EV Battery System Voltage Too Low for Voltage Step Up ConversionCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AFE concerns hybrid/ev battery system voltage too low for voltage step up conversion. Learn what this fault indicates and where to begin diagnosis.P0AFFSystem Voltage Too Low for Voltage Step Down ConversionCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AFF concerns system voltage too low for voltage step down conversion. Learn what this fault indicates and where to begin diagnosis.P0B00Electric/Auxiliary Transmission Fluid Pump Motor Phase U CurrentCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B00 concerns electric/auxiliary transmission fluid pump motor phase u current. Learn what this fault indicates and where to begin diagnosis.P0B01Electric/Auxiliary Transmission Fluid Pump Motor Phase U Current LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B01 concerns electric/auxiliary transmission fluid pump motor phase u current low. Learn what this fault indicates and where to begin diagnosis.P0B02Electric/Auxiliary Transmission Fluid Pump Motor Phase U Current HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B02 concerns electric/auxiliary transmission fluid pump motor phase u current high. Learn what this fault indicates and where to begin diagnosis.P0B03Electric/Auxiliary Transmission Fluid Pump Motor Phase V CurrentCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B03 concerns electric/auxiliary transmission fluid pump motor phase v current. Learn what this fault indicates and where to begin diagnosis.P0B04Electric/Auxiliary Transmission Fluid Pump Motor Phase V Current LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B04 concerns electric/auxiliary transmission fluid pump motor phase v current low. Learn what this fault indicates and where to begin diagnosis.P0B05Electric/Auxiliary Transmission Fluid Pump Motor Phase V Current HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B05 concerns electric/auxiliary transmission fluid pump motor phase v current high. Learn what this fault indicates and where to begin diagnosis.P0B06Electric/Auxiliary Transmission Fluid Pump Motor Phase W CurrentCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B06 concerns electric/auxiliary transmission fluid pump motor phase w current. Learn what this fault indicates and where to begin diagnosis.