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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

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 601–624 of 9253

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C0629Variable Effort Steering Control Module Incorrect Component InstalledUrgentChassis & Brakes45–120 minutes for initial diagnosisC0629 concerns variable effort steering control module incorrect component installed. Learn what this fault indicates and where to begin diagnosis.C062AVariable Effort Steering Module Temperature Too HighUrgentChassis & Brakes45–120 minutes for initial diagnosisC062A concerns variable effort steering module temperature too high. Learn what this fault indicates and where to begin diagnosis.C062BVariable Effort Steering Module Temperature Too LowUrgentChassis & Brakes45–120 minutes for initial diagnosisC062B concerns variable effort steering module temperature too low. Learn what this fault indicates and where to begin diagnosis.C062CBrake Booster Motor “B” PerformanceUrgentChassis & Brakes45–120 minutes for initial diagnosisC062C concerns brake booster motor “b” performance. Learn what this fault indicates and where to begin diagnosis.C062DABS Valves Range/PerformanceCheck soonChassis & Brakes45–120 minutes for initial diagnosisC062D concerns abs valves range/performance. Learn what this fault indicates and where to begin diagnosis.C062EActive Air Dam Supply Voltage Circuit LowCheck soonChassis & Brakes45–120 minutes for initial diagnosisC062E concerns active air dam supply voltage circuit low. Learn what this fault indicates and where to begin diagnosis.C062FActive Air Dam Supply Voltage Circuit HighCheck soonChassis & Brakes45–120 minutes for initial diagnosisC062F concerns active air dam supply voltage circuit high. Learn what this fault indicates and where to begin diagnosis.C0630Active Air Dam StuckCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0630 concerns active air dam stuck. Learn what this fault indicates and where to begin diagnosis.C0631Front Axle Disconnect ActuatorCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0631 concerns front axle disconnect actuator. Learn what this fault indicates and where to begin diagnosis.C0632Front Axle Disconnect Control CircuitCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0632 concerns front axle disconnect control circuit. Learn what this fault indicates and where to begin diagnosis.C0633Front Half Shaft Speed SensorCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0633 concerns front half shaft speed sensor. Learn what this fault indicates and where to begin diagnosis.C0634Brake Pressure Sensor A/B CorrelationUrgentChassis & Brakes45–120 minutes for initial diagnosisC0634 concerns brake pressure sensor a/b correlation. Learn what this fault indicates and where to begin diagnosis.C0635Brake Pressure Sensor G Circuit/OpenUrgentChassis & Brakes45–120 minutes for initial diagnosisC0635 concerns brake pressure sensor g circuit/open. Learn what this fault indicates and where to begin diagnosis.C0636Brake Pressure Sensor G Circuit HighUrgentChassis & Brakes45–120 minutes for initial diagnosisC0636 concerns brake pressure sensor g circuit high. Learn what this fault indicates and where to begin diagnosis.C0637Brake Pressure Sensor G Circuit LowUrgentChassis & Brakes45–120 minutes for initial diagnosisC0637 concerns brake pressure sensor g circuit low. Learn what this fault indicates and where to begin diagnosis.C0638Brake Pressure Sensor G Range/PerformanceUrgentChassis & Brakes45–120 minutes for initial diagnosisC0638 concerns brake pressure sensor g range/performance. Learn what this fault indicates and where to begin diagnosis.C0639Brake Pressure Sensor H Circuit/OpenUrgentChassis & Brakes45–120 minutes for initial diagnosisC0639 concerns brake pressure sensor h circuit/open. Learn what this fault indicates and where to begin diagnosis.C063ABrake Pressure Sensor H Circuit HighUrgentChassis & Brakes45–120 minutes for initial diagnosisC063A concerns brake pressure sensor h circuit high. Learn what this fault indicates and where to begin diagnosis.C063BBrake Pressure Sensor H Circuit LowUrgentChassis & Brakes45–120 minutes for initial diagnosisC063B concerns brake pressure sensor h circuit low. Learn what this fault indicates and where to begin diagnosis.C063CBrake Pressure Sensor H Range/PerformanceUrgentChassis & Brakes45–120 minutes for initial diagnosisC063C concerns brake pressure sensor h range/performance. Learn what this fault indicates and where to begin diagnosis.C063DBrake Pressure Sensor J Circuit/OpenUrgentChassis & Brakes45–120 minutes for initial diagnosisC063D concerns brake pressure sensor j circuit/open. Learn what this fault indicates and where to begin diagnosis.C063EBrake Pressure Sensor J Circuit HighUrgentChassis & Brakes45–120 minutes for initial diagnosisC063E concerns brake pressure sensor j circuit high. Learn what this fault indicates and where to begin diagnosis.C063FBrake Pressure Sensor J Circuit LowUrgentChassis & Brakes45–120 minutes for initial diagnosisC063F concerns brake pressure sensor j circuit low. Learn what this fault indicates and where to begin diagnosis.C0640Brake Pressure Sensor J Range/PerformanceUrgentChassis & Brakes45–120 minutes for initial diagnosisC0640 concerns brake pressure sensor j range/performance. Learn what this fault indicates and where to begin diagnosis.