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 1129–1152 of 1797

Most searched first

P0DEFPedestrian Alert Control Module Circuit HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0DEF concerns pedestrian alert control module circuit high. Learn what this fault indicates and where to begin diagnosis.P0DF0Generator Inverter Temperature Sensor B CircuitCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0DF0 concerns generator inverter temperature sensor b circuit. Learn what this fault indicates and where to begin diagnosis.P0DF1Generator Inverter Temperature Sensor B Circuit Intermittent/ErraticCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0DF1 concerns generator inverter temperature sensor b circuit intermittent/erratic. Learn what this fault indicates and where to begin diagnosis.P0DF2Generator Inverter Temperature Sensor C CircuitCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0DF2 concerns generator inverter temperature sensor c circuit. Learn what this fault indicates and where to begin diagnosis.P0DF3Generator Inverter Temperature Sensor C Circuit Intermittent/ErraticCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0DF3 concerns generator inverter temperature sensor c circuit intermittent/erratic. Learn what this fault indicates and where to begin diagnosis.P0DF4Generator Inverter Temperature Sensor B Circuit Range/PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0DF4 concerns generator inverter temperature sensor b circuit range/performance. Learn what this fault indicates and where to begin diagnosis.P0DF5Generator Inverter Temperature Sensor B Circuit LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0DF5 concerns generator inverter temperature sensor b circuit low. Learn what this fault indicates and where to begin diagnosis.P0DF6Generator Inverter Temperature Sensor B Circuit HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0DF6 concerns generator inverter temperature sensor b circuit high. Learn what this fault indicates and where to begin diagnosis.P0DF7Generator Inverter Temperature Sensor C Circuit Range/PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0DF7 concerns generator inverter temperature sensor c circuit range/performance. Learn what this fault indicates and where to begin diagnosis.P0DF8Generator Inverter Temperature Sensor C Circuit LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0DF8 concerns generator inverter temperature sensor c circuit low. Learn what this fault indicates and where to begin diagnosis.P0DF9Generator Inverter Temperature Sensor C Circuit HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0DF9 concerns generator inverter temperature sensor c circuit high. Learn what this fault indicates and where to begin diagnosis.P0DFAGenerator Phase U-V-W Current Sensor CorrelationCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0DFA concerns generator phase u-v-w current sensor correlation. Learn what this fault indicates and where to begin diagnosis.P0DFBGenerator Position Exceeding Learn LimitCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0DFB concerns generator position exceeding learn limit. Learn what this fault indicates and where to begin diagnosis.P0DFCGenerator Position Sensor Not LearnedCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0DFC concerns generator position sensor not learned. Learn what this fault indicates and where to begin diagnosis.P0DFDBattery Charger Coolant Control Valve Control Circuit/OpenCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0DFD concerns battery charger coolant control valve control circuit/open. Learn what this fault indicates and where to begin diagnosis.P0DFEBattery Charger Coolant Control Valve Control Circuit LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0DFE concerns battery charger coolant control valve control circuit low. Learn what this fault indicates and where to begin diagnosis.P0DFFBattery Charger Coolant Control Valve Control Circuit HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0DFF concerns battery charger coolant control valve control circuit high. Learn what this fault indicates and where to begin diagnosis.P0E00Generator Phase U Current Sensor CircuitCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0E00 concerns generator phase u current sensor circuit. Learn what this fault indicates and where to begin diagnosis.P0E01Generator Phase U Current Sensor Circuit Range/PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0E01 concerns generator phase u current sensor circuit range/performance. Learn what this fault indicates and where to begin diagnosis.P0E02Generator Phase U Current Sensor Circuit LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0E02 concerns generator phase u current sensor circuit low. Learn what this fault indicates and where to begin diagnosis.P0E03Generator Phase U Current Sensor Circuit HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0E03 concerns generator phase u current sensor circuit high. Learn what this fault indicates and where to begin diagnosis.P0E04Generator Phase V Current Sensor CircuitCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0E04 concerns generator phase v current sensor circuit. Learn what this fault indicates and where to begin diagnosis.P0E05Generator Phase V Current Sensor Circuit Range/PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0E05 concerns generator phase v current sensor circuit range/performance. Learn what this fault indicates and where to begin diagnosis.P0E06Generator Phase V Current Sensor Circuit LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0E06 concerns generator phase v current sensor circuit low. Learn what this fault indicates and where to begin diagnosis.