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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 25–48 of 479

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C0024Brake Pedal Feedback Pressure Solenoid CircuitUrgentChassis & Brakes45–120 minutes for initial diagnosisC0024 concerns brake pedal feedback pressure solenoid circuit. Learn what this fault indicates and where to begin diagnosis.C0025Brake Pedal Feedback Pressure Sensor CircuitUrgentChassis & Brakes45–120 minutes for initial diagnosisC0025 concerns brake pedal feedback pressure sensor circuit. Learn what this fault indicates and where to begin diagnosis.C0030Left Front Tone WheelCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0030 concerns left front tone wheel. Learn what this fault indicates and where to begin diagnosis.C0031Left Front Wheel Speed SensorCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0031 concerns left front wheel speed sensor. Learn what this fault indicates and where to begin diagnosis.C0032Left Front Wheel Speed Sensor SupplyCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0032 concerns left front wheel speed sensor supply. Learn what this fault indicates and where to begin diagnosis.C0033Right Front Tone WheelCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0033 concerns right front tone wheel. Learn what this fault indicates and where to begin diagnosis.C0034Right Front Wheel Speed SensorCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0034 concerns right front wheel speed sensor. Learn what this fault indicates and where to begin diagnosis.C0036Left Rear Tone WheelCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0036 concerns left rear tone wheel. Learn what this fault indicates and where to begin diagnosis.C0037Left Rear Wheel Speed SensorCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0037 concerns left rear wheel speed sensor. Learn what this fault indicates and where to begin diagnosis.C0038Left Rear Wheel Speed Sensor SupplyCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0038 concerns left rear wheel speed sensor supply. Learn what this fault indicates and where to begin diagnosis.C0039Right Rear Tone WheelCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0039 concerns right rear tone wheel. Learn what this fault indicates and where to begin diagnosis.C003ARight Rear Wheel Speed SensorCheck soonChassis & Brakes45–120 minutes for initial diagnosisC003A concerns right rear wheel speed sensor. Learn what this fault indicates and where to begin diagnosis.C003BRight Rear Wheel Speed Sensor SupplyCheck soonChassis & Brakes45–120 minutes for initial diagnosisC003B concerns right rear wheel speed sensor supply. Learn what this fault indicates and where to begin diagnosis.C003CRear Tone WheelCheck soonChassis & Brakes45–120 minutes for initial diagnosisC003C concerns rear tone wheel. Learn what this fault indicates and where to begin diagnosis.C003DRear Wheel Speed SensorCheck soonChassis & Brakes45–120 minutes for initial diagnosisC003D concerns rear wheel speed sensor. Learn what this fault indicates and where to begin diagnosis.C003ERear Wheel Speed Sensor SupplyCheck soonChassis & Brakes45–120 minutes for initial diagnosisC003E concerns rear wheel speed sensor supply. Learn what this fault indicates and where to begin diagnosis.C003FWheel Speed Sensors Rotation Direction CorrelationCheck soonChassis & Brakes45–120 minutes for initial diagnosisC003F concerns wheel speed sensors rotation direction correlation. Learn what this fault indicates and where to begin diagnosis.C0041Brake Pedal Switch BUrgentChassis & Brakes45–120 minutes for initial diagnosisC0041 concerns brake pedal switch b. Learn what this fault indicates and where to begin diagnosis.C0042Brake Pedal Position Sensor Circuit AUrgentChassis & Brakes45–120 minutes for initial diagnosisC0042 concerns brake pedal position sensor circuit a. Learn what this fault indicates and where to begin diagnosis.C0043Brake Pedal Position Sensor Circuit BUrgentChassis & Brakes45–120 minutes for initial diagnosisC0043 concerns brake pedal position sensor circuit b. Learn what this fault indicates and where to begin diagnosis.C0044Brake Pressure Sensor AUrgentChassis & Brakes45–120 minutes for initial diagnosisC0044 concerns brake pressure sensor a. Learn what this fault indicates and where to begin diagnosis.C0046Brake Pressure Sensor A/BUrgentChassis & Brakes45–120 minutes for initial diagnosisC0046 concerns brake pressure sensor a/b. Learn what this fault indicates and where to begin diagnosis.C0047Brake Booster Pressure SensorUrgentChassis & Brakes45–120 minutes for initial diagnosisC0047 concerns brake booster pressure sensor. Learn what this fault indicates and where to begin diagnosis.C0048Brake Booster Travel SensorUrgentChassis & Brakes45–120 minutes for initial diagnosisC0048 concerns brake booster travel sensor. Learn what this fault indicates and where to begin diagnosis.