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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.

Electrical & Charging System P · Powertrain Clear all

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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 409–432 of 1797

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P0B1FHybrid/EV Battery Pack Voltage Sense D Circuit Range/PerformanceUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0B1F concerns hybrid/ev battery pack voltage sense d circuit range/performance. Learn what this fault indicates and where to begin diagnosis.P0B20Hybrid/EV Battery Pack Voltage Sense D Circuit LowUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0B20 concerns hybrid/ev battery pack voltage sense d circuit low. Learn what this fault indicates and where to begin diagnosis.P0B21Hybrid/EV Battery Pack Voltage Sense D Circuit HighUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0B21 concerns hybrid/ev battery pack voltage sense d circuit high. Learn what this fault indicates and where to begin diagnosis.P0B22Hybrid/EV Battery Pack Voltage Sense D Circuit Intermittent/ErraticUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0B22 concerns hybrid/ev battery pack voltage sense d circuit intermittent/erratic. 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.P0B29Hybrid/EV Battery B Voltage LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B29 concerns hybrid/ev battery b voltage low. Learn what this fault indicates and where to begin diagnosis.P0B2AHybrid/EV Battery B Voltage HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B2A concerns hybrid/ev battery b voltage high. Learn what this fault indicates and where to begin diagnosis.P0B2BHybrid/EV Battery C VoltageCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B2B concerns hybrid/ev battery c voltage. Learn what this fault indicates and where to begin diagnosis.P0B2CHybrid/EV Battery C Voltage UnstableCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B2C concerns hybrid/ev battery c voltage unstable. Learn what this fault indicates and where to begin diagnosis.P0B2DHybrid/EV Battery C Voltage LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B2D concerns hybrid/ev battery c voltage low. Learn what this fault indicates and where to begin diagnosis.P0B2EHybrid/EV Battery C Voltage HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B2E concerns hybrid/ev battery c voltage high. Learn what this fault indicates and where to begin diagnosis.P0B2FHybrid/EV Battery D VoltageCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B2F concerns hybrid/ev battery d voltage. Learn what this fault indicates and where to begin diagnosis.P0B30Hybrid/EV Battery D Voltage UnstableCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B30 concerns hybrid/ev battery d voltage unstable. Learn what this fault indicates and where to begin diagnosis.P0B31Hybrid/EV Battery D Voltage LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B31 concerns hybrid/ev battery d voltage low. Learn what this fault indicates and where to begin diagnosis.P0B32Hybrid/EV Battery D Voltage HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B32 concerns hybrid/ev battery d voltage high. Learn what this fault indicates and where to begin diagnosis.P0B33High Voltage Service Disconnect CircuitUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0B33 concerns high voltage service disconnect circuit. Learn what this fault indicates and where to begin diagnosis.P0B34High Voltage Service Disconnect Circuit PerformanceUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0B34 concerns high voltage service disconnect circuit performance. Learn what this fault indicates and where to begin diagnosis.P0B35High Voltage Service Disconnect Circuit LowUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0B35 concerns high voltage service disconnect circuit low. Learn what this fault indicates and where to begin diagnosis.P0B36High Voltage Service Disconnect Circuit HighUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0B36 concerns high voltage service disconnect circuit high. Learn what this fault indicates and where to begin diagnosis.