Diagnostic library
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Search the code from your scanner, then narrow the library by system, severity, or code family.
9,253 diagnostic guides
Find codes by symptomChoose what you notice to search matching code guides.
Rough idle or shakingVibration while stoppedHard to startLong cranking or no-startEngine stallsCuts out at idle or on the roadHesitates or loses powerSlow response when acceleratingBattery light is onCharging system warningHarsh gear changesDelayed or rough shifting
A symptom can have several causes. Treat matching codes as clues and follow the diagnostic checks in each guide.
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These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.
Diagnostic codes
Showing 217–240 of 7353
P0100Mass or Volume Air Flow Circuit MalfunctionCheck soonSensors & Electronics45–120 minutes for initial diagnosisP0101MAF Sensor Circuit Range/Performance ProblemCheck soonSensors & Electronics30–90 minutesP0102Mass Air Flow Sensor Circuit Low InputSensors & ElectronicsP0105Manifold Absolute Pressure/Barometric Pressure Circuit MalfunctionCheck soonSensors & Electronics45–120 minutes for initial diagnosisP0106MAP Sensor Range/Performance ProblemSensors & ElectronicsP010AMass or Volume Air Flow Sensor B CircuitCheck soonSensors & Electronics30–90 minutes for initial diagnosisP010BMass or Volume Air Flow B Circuit Range/PerformanceCheck soonSensors & Electronics30–90 minutes for initial diagnosisP010CMass or Volume Air Flow Sensor B Circuit LowCheck soonSensors & Electronics30–90 minutes for initial diagnosisP010DMass or Volume Air Flow Sensor B Circuit HighCheck soonSensors & Electronics30–90 minutes for initial diagnosisP010EMass or Volume Air Flow Sensor B Circuit Intermittent/ErraticCheck soonSensors & Electronics30–90 minutes for initial diagnosisP010FMass or Volume Air Flow Sensor A/B CorrelationCheck soonSensors & Electronics30–90 minutes for initial diagnosisP0114Intake Air Temperature Sensor 1 Circuit Intermittent Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP0115Engine Coolant Temperature Sensor 1 CircuitCheck soonSensors & Electronics45–120 minutes for initial diagnosisP0116Coolant Temperature Sensor Range/PerformanceSensors & ElectronicsP0118Engine Coolant Temperature Sensor High InputSensors & ElectronicsP011AEngine Coolant Temperature Sensor 1/2 CorrelationCheck soonEngine Problems30–120 minutes for initial diagnosisP011BEngine Coolant Temperature/Intake Air Temperature CorrelationCheck soonEngine Problems30–120 minutes for initial diagnosisP011CCharge Air Cooler Temperature/Intake Air Temperature Correlation Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP011DCharge Air Cooler Temperature/Intake Air Temperature Correlation Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP011EEngine Coolant Temperature 1 / Ambient Air Temperature CorrelationCheck soonEngine Problems30–120 minutes for initial diagnosisP011FEngine Coolant Temperature 2 / Ambient Air Temperature CorrelationCheck soonEngine Problems30–120 minutes for initial diagnosisP0120Throttle/Pedal Position Sensor/Switch A CircuitCheck soonSensors & Electronics45–120 minutes for initial diagnosisP0121Throttle Position Sensor Range/PerformanceSensors & ElectronicsP0125Insufficient Coolant Temperature for Closed Loop Fuel ControlCheck soonFuel System30–120 minutes for initial diagnosis