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.

P · Powertrain 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 3505–3528 of 7353

Most searched first

P0EEABattery Charger Coupler Temperature Sensor B Circuit HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0EEA concerns battery charger coupler temperature sensor b circuit high. Learn what this fault indicates and where to begin diagnosis.P0EEBBattery Charger Coupler Temperature Sensor B Circuit Intermittent/ErraticCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0EEB concerns battery charger coupler temperature sensor b circuit intermittent/erratic. Learn what this fault indicates and where to begin diagnosis.P0EECBattery Energy Control Module B PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0EEC concerns battery energy control module b performance. Learn what this fault indicates and where to begin diagnosis.P0EEDHybrid/EV Battery System Discharge Circuit PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0EED concerns hybrid/ev battery system discharge circuit performance. Learn what this fault indicates and where to begin diagnosis.P0EEEBattery Charger Coupler Temperature B Too HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0EEE concerns battery charger coupler temperature b too high. Learn what this fault indicates and where to begin diagnosis.P0EEFDrive Motor A Control Module OvertemperatureCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0EEF concerns drive motor a control module overtemperature. Learn what this fault indicates and where to begin diagnosis.P0EF0Battery Charger Coupler Unlock Disabled - High Voltage PresentUrgentElectrical & Charging System45–120 minutes for initial diagnosisP0EF0 concerns battery charger coupler unlock disabled - high voltage present. Learn what this fault indicates and where to begin diagnosis.P0EF1Drive Motor C Temperature Sensor CircuitCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0EF1 concerns drive motor c temperature sensor circuit. Learn what this fault indicates and where to begin diagnosis.P0EF2Drive Motor C Temperature Sensor Range/PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0EF2 concerns drive motor c temperature sensor range/performance. Learn what this fault indicates and where to begin diagnosis.P0EF3Drive Motor C Temperature Sensor Circuit LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0EF3 concerns drive motor c temperature sensor circuit low. Learn what this fault indicates and where to begin diagnosis.P0EF4Drive Motor C Temperature Sensor Circuit HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0EF4 concerns drive motor c temperature sensor circuit high. Learn what this fault indicates and where to begin diagnosis.P0EF5Drive Motor C Temperature Sensor Circuit Intermittent/ErraticCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0EF5 concerns drive motor c temperature sensor circuit intermittent/erratic. Learn what this fault indicates and where to begin diagnosis.P0EF6Drive Motor C Temperature Sensor Over TemperatureCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0EF6 concerns drive motor c temperature sensor over temperature. Learn what this fault indicates and where to begin diagnosis.P0EF7Battery Charger A Input Voltage Sensor B CircuitCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0EF7 concerns battery charger a input voltage sensor b circuit. Learn what this fault indicates and where to begin diagnosis.P0EF8Battery Charger A Input Voltage Sensor B Circuit Range/PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0EF8 concerns battery charger a input voltage sensor b circuit range/performance. Learn what this fault indicates and where to begin diagnosis.P0EF9Battery Charger A Input Voltage Sensor B Circuit LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0EF9 concerns battery charger a input voltage sensor b circuit low. Learn what this fault indicates and where to begin diagnosis.P0EFABattery Charger A Input Voltage Sensor B Circuit HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0EFA concerns battery charger a input voltage sensor b circuit high. Learn what this fault indicates and where to begin diagnosis.P0EFBBattery Charger A Input Voltage Sensor C CircuitCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0EFB concerns battery charger a input voltage sensor c circuit. Learn what this fault indicates and where to begin diagnosis.P0EFCBattery Charger A Input Voltage Sensor C Circuit Range/PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0EFC concerns battery charger a input voltage sensor c circuit range/performance. Learn what this fault indicates and where to begin diagnosis.P0EFDBattery Charger A Input Voltage Sensor C Circuit LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0EFD concerns battery charger a input voltage sensor c circuit low. Learn what this fault indicates and where to begin diagnosis.P0EFEBattery Charger A Input Voltage Sensor C Circuit HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0EFE concerns battery charger a input voltage sensor c circuit high. Learn what this fault indicates and where to begin diagnosis.P2000NOx Adsorber Efficiency Below Threshold Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2000 relates to nox adsorber efficiency below threshold bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2001NOx Adsorber Efficiency Below Threshold Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2001 relates to nox adsorber efficiency below threshold bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2002Particulate Filter Efficiency Below Threshold Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP2002 relates to particulate filter efficiency below threshold bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.