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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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Severity

All severities9253 Low priority305 Check soon8256 Urgent621

Code family

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 313–336 of 1570

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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.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.P0B07Electric/Auxiliary Transmission Fluid Pump Motor Phase W Current LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B07 concerns electric/auxiliary transmission fluid pump motor phase w current low. Learn what this fault indicates and where to begin diagnosis.P0B08Electric/Auxiliary Transmission Fluid Pump Motor Phase W Current HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B08 concerns electric/auxiliary transmission fluid pump motor phase w current high. Learn what this fault indicates and where to begin diagnosis.P0B09Electric/Auxiliary Transmission Fluid Pump A Motor Supply Voltage Circuit/OpenCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B09 concerns electric/auxiliary transmission fluid pump a motor supply voltage circuit/open. Learn what this fault indicates and where to begin diagnosis.P0B0AElectric/Auxiliary Transmission Fluid Pump A Motor Supply Voltage Circuit LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B0A concerns electric/auxiliary transmission fluid pump a motor supply voltage circuit low. Learn what this fault indicates and where to begin diagnosis.P0B0BElectric/Auxiliary Transmission Fluid Pump A Motor Supply Voltage Circuit HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B0B concerns electric/auxiliary transmission fluid pump a motor supply voltage circuit high. Learn what this fault indicates and where to begin diagnosis.P0B0CElectric/Auxiliary Transmission Fluid Pump A Hydraulic LeakageCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B0C concerns electric/auxiliary transmission fluid pump a hydraulic leakage. Learn what this fault indicates and where to begin diagnosis.P0B0DElectric/Auxiliary Transmission Fluid Pump Motor Control ModuleCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B0D concerns electric/auxiliary transmission fluid pump motor control module. Learn what this fault indicates and where to begin diagnosis.P0B23Hybrid/EV Battery A VoltageCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B23 concerns hybrid/ev battery a voltage. Learn what this fault indicates and where to begin diagnosis.P0B24Hybrid/EV Battery A Voltage UnstableCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B24 concerns hybrid/ev battery a voltage unstable. Learn what this fault indicates and where to begin diagnosis.P0B25Hybrid/EV Battery A Voltage LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B25 concerns hybrid/ev battery a voltage low. Learn what this fault indicates and where to begin diagnosis.P0B26Hybrid/EV Battery A Voltage HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B26 concerns hybrid/ev battery a voltage high. Learn what this fault indicates and where to begin diagnosis.P0B27Hybrid/EV Battery B VoltageCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B27 concerns hybrid/ev battery b voltage. Learn what this fault indicates and where to begin diagnosis.P0B28Hybrid/EV Battery B Voltage UnstableCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B28 concerns hybrid/ev battery b voltage unstable. Learn what this fault indicates and where to begin diagnosis.