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 2881–2904 of 9253

Most searched first

P099AShift Solenoid G Control Circuit Range/PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP099A relates to shift solenoid g control circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P099BShift Solenoid G Control Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP099B relates to shift solenoid g control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P099CShift Solenoid G Control Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP099C relates to shift solenoid g control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P099DShift Solenoid H Control Circuit Range/PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP099D relates to shift solenoid h control circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P099EShift Solenoid H Control Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP099E relates to shift solenoid h control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P099FShift Solenoid H Control Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP099F relates to shift solenoid h control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P09A0Shift Solenoid G Control Circuit/OpenCheck soonTransmission Issues30–120 minutes for initial diagnosisP09A0 relates to shift solenoid g control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P09A1Shift Solenoid H Control Circuit/OpenCheck soonTransmission Issues30–120 minutes for initial diagnosisP09A1 relates to shift solenoid h control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P09A2Gate Select Position Circuit BCheck soonSensors & Electronics30–120 minutes for initial diagnosisP09A2 relates to gate select position circuit b. Check the fault conditions and vehicle-specific procedure before replacing parts.P09A3Gate Select Position Circuit B Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP09A3 relates to gate select position circuit b range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P09A4Gate Select Position Circuit B LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP09A4 relates to gate select position circuit b low. Check the fault conditions and vehicle-specific procedure before replacing parts.P09A5Gate Select Position Circuit B HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP09A5 relates to gate select position circuit b high. Check the fault conditions and vehicle-specific procedure before replacing parts.P09A6Gate Select Position Circuit CCheck soonSensors & Electronics30–120 minutes for initial diagnosisP09A6 relates to gate select position circuit c. Check the fault conditions and vehicle-specific procedure before replacing parts.P09A7Gate Select Position Circuit C Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP09A7 relates to gate select position circuit c range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P09A8Gate Select Position Circuit C LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP09A8 relates to gate select position circuit c low. Check the fault conditions and vehicle-specific procedure before replacing parts.P09A9Gate Select Position Circuit C HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP09A9 relates to gate select position circuit c high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0A00Motor Electronics Coolant Temperature Sensor A CircuitCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A00 concerns motor electronics coolant temperature sensor a circuit. Learn what this fault indicates and where to begin diagnosis.P0A01Motor Electronics Coolant Temperature Sensor A Circuit Range/PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A01 concerns motor electronics coolant temperature sensor a circuit range/performance. Learn what this fault indicates and where to begin diagnosis.P0A02Motor Electronics Coolant Temperature Sensor A Circuit LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A02 concerns motor electronics coolant temperature sensor a circuit low. Learn what this fault indicates and where to begin diagnosis.P0A03Motor Electronics Coolant Temperature Sensor A Circuit HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A03 concerns motor electronics coolant temperature sensor a circuit high. Learn what this fault indicates and where to begin diagnosis.P0A04Motor Electronics Coolant Temperature Sensor A Circuit IntermittentCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A04 concerns motor electronics coolant temperature sensor a circuit intermittent. Learn what this fault indicates and where to begin diagnosis.P0A05Motor Electronics Coolant Pump A Control Circuit/OpenCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A05 concerns motor electronics coolant pump a control circuit/open. Learn what this fault indicates and where to begin diagnosis.P0A06Motor Electronics Coolant Pump A Control Circuit LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A06 concerns motor electronics coolant pump a control circuit low. Learn what this fault indicates and where to begin diagnosis.P0A07Motor Electronics Coolant Pump A Control Circuit HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A07 concerns motor electronics coolant pump a control circuit high. Learn what this fault indicates and where to begin diagnosis.