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.

Sensors & Electronics Check soon 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 25–48 of 1939

Most searched first

P004DTurbocharger/Supercharger Boost Control B Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP004D relates to turbocharger/supercharger boost control b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P004ETurbocharger/Supercharger Boost Control A Circuit Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP004E relates to turbocharger/supercharger boost control a circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P004FTurbocharger/Supercharger Boost Control B Circuit Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP004F relates to turbocharger/supercharger boost control b circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P006AMAP - Mass or Volume Air Flow Correlation Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP006A relates to map - mass or volume air flow correlation bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P006BMAP - Exhaust Pressure CorrelationCheck soonSensors & Electronics30–120 minutes for initial diagnosisP006B relates to map - exhaust pressure correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P006CMAP - Turbocharger/Supercharger Inlet Pressure CorrelationCheck soonSensors & Electronics30–120 minutes for initial diagnosisP006C relates to map - turbocharger/supercharger inlet pressure correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P006DBarometric Pressure - Turbocharger/Supercharger Inlet Pressure Correlation Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP006D relates to barometric pressure - turbocharger/supercharger inlet pressure correlation bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P007ACharge Air Cooler Temperature Sensor Circuit Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP007A relates to charge air cooler temperature sensor circuit bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P007BCharge Air Cooler Temperature Sensor Circuit Range/Performance Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP007B relates to charge air cooler temperature sensor circuit range/performance bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P007CCharge Air Cooler Temperature Sensor Circuit Low Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP007C relates to charge air cooler temperature sensor circuit low bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P007DCharge Air Cooler Temperature Sensor Circuit High Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP007D relates to charge air cooler temperature sensor circuit high bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P007ECharge Air Cooler Temperature Sensor Circuit Intermittent/Erratic Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP007E relates to charge air cooler temperature sensor circuit intermittent/erratic bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P007FCharge Air Cooler Temperature Sensor Bank1/Bank2 CorrelationCheck soonSensors & Electronics30–120 minutes for initial diagnosisP007F relates to charge air cooler temperature sensor bank1/bank2 correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P00A0Charge Air Cooler Temperature Sensor Circuit Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP00A0 relates to charge air cooler temperature sensor circuit bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P00A1Charge Air Cooler Temperature Sensor Circuit Range/Performance Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP00A1 relates to charge air cooler temperature sensor circuit range/performance bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P00A2Charge Air Cooler Temperature Sensor Circuit Low Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP00A2 relates to charge air cooler temperature sensor circuit low bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P00A3Charge Air Cooler Temperature Sensor Circuit High Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP00A3 relates to charge air cooler temperature sensor circuit high bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P00A4Charge Air Cooler Temperature Sensor Circuit Intermittent/Erratic Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP00A4 relates to charge air cooler temperature sensor circuit intermittent/erratic bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P00A5Intake Air Temperature Sensor 2 Circuit Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP00A5 relates to intake air temperature sensor 2 circuit bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P00A6Intake Air Temperature Sensor 2 Circuit Range/Performance Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP00A6 relates to intake air temperature sensor 2 circuit range/performance bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P00A7Intake Air Temperature Sensor 2 Circuit Low Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP00A7 relates to intake air temperature sensor 2 circuit low bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P00A8Intake Air Temperature Sensor 2 Circuit High Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP00A8 relates to intake air temperature sensor 2 circuit high bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P00A9Intake Air Temperature Sensor 2 Circuit Intermittent/Erratic Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP00A9 relates to intake air temperature sensor 2 circuit intermittent/erratic bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P00AAIntake Air Temperature Sensor 1 Circuit Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP00AA relates to intake air temperature sensor 1 circuit bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.