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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.

Urgent C · Chassis Clear all

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

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All severities9253 Low priority305 Check soon8256 Urgent621

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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 169–192 of 212

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C0622Variable Effort Steering Lock/Safety Actuator Control Circuit HighUrgentChassis & Brakes45–120 minutes for initial diagnosisC0622 concerns variable effort steering lock/safety actuator control circuit high. Learn what this fault indicates and where to begin diagnosis.C0623Variable Effort Steering Lock/Safety Actuator Control Circuit PerformanceUrgentChassis & Brakes45–120 minutes for initial diagnosisC0623 concerns variable effort steering lock/safety actuator control circuit performance. Learn what this fault indicates and where to begin diagnosis.C0624Variable Effort Steering Sensor CircuitUrgentChassis & Brakes45–120 minutes for initial diagnosisC0624 concerns variable effort steering sensor circuit. Learn what this fault indicates and where to begin diagnosis.C0625Variable Effort Steering Sensor Circuit Range/PerformanceUrgentChassis & Brakes45–120 minutes for initial diagnosisC0625 concerns variable effort steering sensor circuit range/performance. Learn what this fault indicates and where to begin diagnosis.C0626Variable Effort Steering Sensor Circuit LowUrgentChassis & Brakes45–120 minutes for initial diagnosisC0626 concerns variable effort steering sensor circuit low. Learn what this fault indicates and where to begin diagnosis.C0627Variable Effort Steering Sensor Circuit HighUrgentChassis & Brakes45–120 minutes for initial diagnosisC0627 concerns variable effort steering sensor circuit high. Learn what this fault indicates and where to begin diagnosis.C0628Variable Effort Steering Module PerformanceUrgentChassis & Brakes45–120 minutes for initial diagnosisC0628 concerns variable effort steering module performance. Learn what this fault indicates and where to begin diagnosis.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.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.