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9,253 diagnostic guides

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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.

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Engine1049 Emissions515 Fuel1016 Sensors & Electronics2110 Transmission866 Electrical & Charging1797 Body & Restraints193 Chassis & Brakes479 Network & Communication1228

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Severity

All severities9253 Low priority305 Check soon8256 Urgent621

Code family

All families9253 P · Powertrain7353 B · Body193 C · Chassis479 U · Network1228

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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 505–528 of 9253

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C05C9Brake Pressure Sensor Supply CircuitUrgentChassis & Brakes45–120 minutes for initial diagnosisC05C9 concerns brake pressure sensor supply circuit. Learn what this fault indicates and where to begin diagnosis.C05CABrake Master Cylinder Piston Position Sensor A Circuit Voltage HighUrgentChassis & Brakes45–120 minutes for initial diagnosisC05CA concerns brake master cylinder piston position sensor a circuit voltage high. Learn what this fault indicates and where to begin diagnosis.C05CBBrake Master Cylinder Piston Position Sensor A Circuit Voltage LowUrgentChassis & Brakes45–120 minutes for initial diagnosisC05CB concerns brake master cylinder piston position sensor a circuit voltage low. Learn what this fault indicates and where to begin diagnosis.C05CCBrake Master Cylinder Piston Position Sensor A Circuit Range/PerformanceUrgentChassis & Brakes45–120 minutes for initial diagnosisC05CC concerns brake master cylinder piston position sensor a circuit range/performance. Learn what this fault indicates and where to begin diagnosis.C05CDBrake Master Cylinder Piston Position Sensor B Circuit Voltage HighUrgentChassis & Brakes45–120 minutes for initial diagnosisC05CD concerns brake master cylinder piston position sensor b circuit voltage high. Learn what this fault indicates and where to begin diagnosis.C05CEBrake Master Cylinder Piston Position Sensor B Circuit Voltage LowUrgentChassis & Brakes45–120 minutes for initial diagnosisC05CE concerns brake master cylinder piston position sensor b circuit voltage low. Learn what this fault indicates and where to begin diagnosis.C05CFBrake Master Cylinder Piston Position Sensor B Circuit Range/PerformanceUrgentChassis & Brakes45–120 minutes for initial diagnosisC05CF concerns brake master cylinder piston position sensor b circuit range/performance. Learn what this fault indicates and where to begin diagnosis.C05D0Brake Master Cylinder Piston Position Sensor A/B CorrelationUrgentChassis & Brakes45–120 minutes for initial diagnosisC05D0 concerns brake master cylinder piston position sensor a/b correlation. Learn what this fault indicates and where to begin diagnosis.C05D1Brake Master Cylinder Piston Position Sensor Supply CircuitUrgentChassis & Brakes45–120 minutes for initial diagnosisC05D1 concerns brake master cylinder piston position sensor supply circuit. Learn what this fault indicates and where to begin diagnosis.C05D2Master Cylinder Piston Position Higher Than ExpectedCheck soonChassis & Brakes45–120 minutes for initial diagnosisC05D2 concerns master cylinder piston position higher than expected. Learn what this fault indicates and where to begin diagnosis.C05D3Driver Applied Pressure Higher Than ExpectedCheck soonChassis & Brakes45–120 minutes for initial diagnosisC05D3 concerns driver applied pressure higher than expected. Learn what this fault indicates and where to begin diagnosis.C05D4Brake Master Cylinder Piston Position Sensor Calibration Not LearnedUrgentChassis & Brakes45–120 minutes for initial diagnosisC05D4 concerns brake master cylinder piston position sensor calibration not learned. Learn what this fault indicates and where to begin diagnosis.C05D5Brake Master Cylinder Cut Off ValveUrgentChassis & Brakes45–120 minutes for initial diagnosisC05D5 concerns brake master cylinder cut off valve. Learn what this fault indicates and where to begin diagnosis.C05D6Power Steering Control Module Processor PerformanceUrgentChassis & Brakes45–120 minutes for initial diagnosisC05D6 concerns power steering control module processor performance. Learn what this fault indicates and where to begin diagnosis.C05D7Brake Transmission Shift Interlock (BTSI) Control CircuitUrgentChassis & Brakes45–120 minutes for initial diagnosisC05D7 concerns brake transmission shift interlock (btsi) control circuit. Learn what this fault indicates and where to begin diagnosis.C05D84WD/AWD Clutch A Actuator Control Circuit/OpenCheck soonChassis & Brakes45–120 minutes for initial diagnosisC05D8 concerns 4wd/awd clutch a actuator control circuit/open. Learn what this fault indicates and where to begin diagnosis.C05D94WD/AWD Clutch A Actuator Control Circuit PerformanceCheck soonChassis & Brakes45–120 minutes for initial diagnosisC05D9 concerns 4wd/awd clutch a actuator control circuit performance. Learn what this fault indicates and where to begin diagnosis.C05DA4WD/AWD Clutch A Actuator Control Circuit LowCheck soonChassis & Brakes45–120 minutes for initial diagnosisC05DA concerns 4wd/awd clutch a actuator control circuit low. Learn what this fault indicates and where to begin diagnosis.C05DB4WD/AWD Clutch A Actuator Control Circuit HighCheck soonChassis & Brakes45–120 minutes for initial diagnosisC05DB concerns 4wd/awd clutch a actuator control circuit high. Learn what this fault indicates and where to begin diagnosis.C05DC4WD/AWD Clutch A Temperature Too HighCheck soonChassis & Brakes45–120 minutes for initial diagnosisC05DC concerns 4wd/awd clutch a temperature too high. Learn what this fault indicates and where to begin diagnosis.C05DD4WD/AWD Clutch A Performance/Stuck DisengagedCheck soonChassis & Brakes45–120 minutes for initial diagnosisC05DD concerns 4wd/awd clutch a performance/stuck disengaged. Learn what this fault indicates and where to begin diagnosis.C05DE4WD/AWD Clutch A Stuck EngagedCheck soonChassis & Brakes45–120 minutes for initial diagnosisC05DE concerns 4wd/awd clutch a stuck engaged. Learn what this fault indicates and where to begin diagnosis.C05DF4WD/AWD Clutch A Engagement FaultCheck soonChassis & Brakes45–120 minutes for initial diagnosisC05DF concerns 4wd/awd clutch a engagement fault. Learn what this fault indicates and where to begin diagnosis.C05E04WD/AWD Clutch A Position Sensor CircuitCheck soonChassis & Brakes45–120 minutes for initial diagnosisC05E0 concerns 4wd/awd clutch a position sensor circuit. Learn what this fault indicates and where to begin diagnosis.