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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 625–648 of 9253

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C0641Brake Pressure Sensor K Circuit/OpenUrgentChassis & Brakes45–120 minutes for initial diagnosisC0641 concerns brake pressure sensor k circuit/open. Learn what this fault indicates and where to begin diagnosis.C0642Brake Pressure Sensor K Circuit HighUrgentChassis & Brakes45–120 minutes for initial diagnosisC0642 concerns brake pressure sensor k circuit high. Learn what this fault indicates and where to begin diagnosis.C0643Brake Pressure Sensor K Circuit LowUrgentChassis & Brakes45–120 minutes for initial diagnosisC0643 concerns brake pressure sensor k circuit low. Learn what this fault indicates and where to begin diagnosis.C0644Brake Pressure Sensor K Range/PerformanceUrgentChassis & Brakes45–120 minutes for initial diagnosisC0644 concerns brake pressure sensor k range/performance. Learn what this fault indicates and where to begin diagnosis.C0645Brake Pressure Sensor L Circuit/OpenUrgentChassis & Brakes45–120 minutes for initial diagnosisC0645 concerns brake pressure sensor l circuit/open. Learn what this fault indicates and where to begin diagnosis.C0646Brake Pressure Sensor L Circuit HighUrgentChassis & Brakes45–120 minutes for initial diagnosisC0646 concerns brake pressure sensor l circuit high. Learn what this fault indicates and where to begin diagnosis.C0647Brake Pressure Sensor L Circuit LowUrgentChassis & Brakes45–120 minutes for initial diagnosisC0647 concerns brake pressure sensor l circuit low. Learn what this fault indicates and where to begin diagnosis.C0648Brake Pressure Sensor L Range/PerformanceUrgentChassis & Brakes45–120 minutes for initial diagnosisC0648 concerns brake pressure sensor l range/performance. Learn what this fault indicates and where to begin diagnosis.C0649Brake Pressure Sensor M Circuit/OpenUrgentChassis & Brakes45–120 minutes for initial diagnosisC0649 concerns brake pressure sensor m circuit/open. Learn what this fault indicates and where to begin diagnosis.C064ABrake Pressure Sensor M Circuit HighUrgentChassis & Brakes45–120 minutes for initial diagnosisC064A concerns brake pressure sensor m circuit high. Learn what this fault indicates and where to begin diagnosis.C064BBrake Pressure Sensor M Circuit LowUrgentChassis & Brakes45–120 minutes for initial diagnosisC064B concerns brake pressure sensor m circuit low. Learn what this fault indicates and where to begin diagnosis.C064CBrake Pressure Sensor M Range/PerformanceUrgentChassis & Brakes45–120 minutes for initial diagnosisC064C concerns brake pressure sensor m range/performance. Learn what this fault indicates and where to begin diagnosis.C064DBrake Pressure Sensor N Circuit/OpenUrgentChassis & Brakes45–120 minutes for initial diagnosisC064D concerns brake pressure sensor n circuit/open. Learn what this fault indicates and where to begin diagnosis.C064EBrake Pressure Sensor N Circuit HighUrgentChassis & Brakes45–120 minutes for initial diagnosisC064E concerns brake pressure sensor n circuit high. Learn what this fault indicates and where to begin diagnosis.C064FBrake Pressure Sensor N Circuit LowUrgentChassis & Brakes45–120 minutes for initial diagnosisC064F concerns brake pressure sensor n circuit low. Learn what this fault indicates and where to begin diagnosis.C0650Brake Pressure Sensor N Range/PerformanceUrgentChassis & Brakes45–120 minutes for initial diagnosisC0650 concerns brake pressure sensor n range/performance. Learn what this fault indicates and where to begin diagnosis.C0651Left Front Wheel Speed Sensor B Circuit/OpenCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0651 concerns left front wheel speed sensor b circuit/open. Learn what this fault indicates and where to begin diagnosis.C0652Left Front Wheel Speed Sensor B Range/PerformanceCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0652 concerns left front wheel speed sensor b range/performance. Learn what this fault indicates and where to begin diagnosis.C0653Left Front Wheel Speed Sensor B Circuit LowCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0653 concerns left front wheel speed sensor b circuit low. Learn what this fault indicates and where to begin diagnosis.C0654Left Front Wheel Speed Sensor B Circuit HighCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0654 concerns left front wheel speed sensor b circuit high. Learn what this fault indicates and where to begin diagnosis.C0655Left Front Wheel Speed Sensor B Intermittent/ErraticCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0655 concerns left front wheel speed sensor b intermittent/erratic. Learn what this fault indicates and where to begin diagnosis.C0656Left Front Wheel Speed Sensor B CorrelationCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0656 concerns left front wheel speed sensor b correlation. Learn what this fault indicates and where to begin diagnosis.C0657Left Front Wheel Speed Sensor B Incorrect Component InstalledCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0657 concerns left front wheel speed sensor b incorrect component installed. Learn what this fault indicates and where to begin diagnosis.C0658Right Front Wheel Speed Sensor B Circuit/OpenCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0658 concerns right front wheel speed sensor b circuit/open. Learn what this fault indicates and where to begin diagnosis.