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.

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 3217–3240 of 9253

Most searched first

P0B40Hybrid/EV Battery Voltage Sense B CircuitCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B40 concerns hybrid/ev battery voltage sense b circuit. Learn what this fault indicates and where to begin diagnosis.P0B41Hybrid/EV Battery Voltage Sense B Circuit Range/PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B41 concerns hybrid/ev battery voltage sense b circuit range/performance. Learn what this fault indicates and where to begin diagnosis.P0B42Hybrid/EV Battery Voltage Sense B Circuit LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B42 concerns hybrid/ev battery voltage sense b circuit low. Learn what this fault indicates and where to begin diagnosis.P0B43Hybrid/EV Battery Voltage Sense B Circuit HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B43 concerns hybrid/ev battery voltage sense b circuit high. Learn what this fault indicates and where to begin diagnosis.P0B44Hybrid/EV Battery Voltage Sense B Circuit Intermittent/ErraticCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B44 concerns hybrid/ev battery voltage sense b circuit intermittent/erratic. Learn what this fault indicates and where to begin diagnosis.P0B45Hybrid/EV Battery Voltage Sense C CircuitCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B45 concerns hybrid/ev battery voltage sense c circuit. Learn what this fault indicates and where to begin diagnosis.P0B46Hybrid/EV Battery Voltage Sense C Circuit Range/PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B46 concerns hybrid/ev battery voltage sense c circuit range/performance. Learn what this fault indicates and where to begin diagnosis.P0B47Hybrid/EV Battery Voltage Sense C Circuit LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B47 concerns hybrid/ev battery voltage sense c circuit low. Learn what this fault indicates and where to begin diagnosis.P0B48Hybrid/EV Battery Voltage Sense C Circuit HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B48 concerns hybrid/ev battery voltage sense c circuit high. Learn what this fault indicates and where to begin diagnosis.P0B49Hybrid/EV Battery Voltage Sense C Circuit Intermittent/ErraticCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B49 concerns hybrid/ev battery voltage sense c circuit intermittent/erratic. Learn what this fault indicates and where to begin diagnosis.P0B4AHybrid/EV Battery Voltage Sense D CircuitCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B4A concerns hybrid/ev battery voltage sense d circuit. Learn what this fault indicates and where to begin diagnosis.P0B4BHybrid/EV Battery Voltage Sense D Circuit Range/PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B4B concerns hybrid/ev battery voltage sense d circuit range/performance. Learn what this fault indicates and where to begin diagnosis.P0B4CHybrid/EV Battery Voltage Sense D Circuit LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B4C concerns hybrid/ev battery voltage sense d circuit low. Learn what this fault indicates and where to begin diagnosis.P0B4DHybrid/EV Battery Voltage Sense D Circuit HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B4D concerns hybrid/ev battery voltage sense d circuit high. Learn what this fault indicates and where to begin diagnosis.P0B4EHybrid/EV Battery Voltage Sense D Circuit Intermittent/ErraticCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B4E concerns hybrid/ev battery voltage sense d circuit intermittent/erratic. Learn what this fault indicates and where to begin diagnosis.P0B4FHybrid/EV Battery Voltage Sense E CircuitCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B4F concerns hybrid/ev battery voltage sense e circuit. Learn what this fault indicates and where to begin diagnosis.P0B50Hybrid/EV Battery Voltage Sense E Circuit Range/PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B50 concerns hybrid/ev battery voltage sense e circuit range/performance. Learn what this fault indicates and where to begin diagnosis.P0B51Hybrid/EV Battery Voltage Sense E Circuit LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B51 concerns hybrid/ev battery voltage sense e circuit low. Learn what this fault indicates and where to begin diagnosis.P0B52Hybrid/EV Battery Voltage Sense E Circuit HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B52 concerns hybrid/ev battery voltage sense e circuit high. Learn what this fault indicates and where to begin diagnosis.P0B53Hybrid/EV Battery Voltage Sense E Circuit Intermittent/ErraticCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B53 concerns hybrid/ev battery voltage sense e circuit intermittent/erratic. Learn what this fault indicates and where to begin diagnosis.P0B54Hybrid/EV Battery Voltage Sense F CircuitCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B54 concerns hybrid/ev battery voltage sense f circuit. Learn what this fault indicates and where to begin diagnosis.P0B55Hybrid/EV Battery Voltage Sense F Circuit Range/PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B55 concerns hybrid/ev battery voltage sense f circuit range/performance. Learn what this fault indicates and where to begin diagnosis.P0B56Hybrid/EV Battery Voltage Sense F Circuit LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B56 concerns hybrid/ev battery voltage sense f circuit low. Learn what this fault indicates and where to begin diagnosis.P0B57Hybrid/EV Battery Voltage Sense F Circuit HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0B57 concerns hybrid/ev battery voltage sense f circuit high. Learn what this fault indicates and where to begin diagnosis.