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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 49–72 of 479

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C0049Brake Fluid LevelUrgentChassis & Brakes45–120 minutes for initial diagnosisC0049 concerns brake fluid level. Learn what this fault indicates and where to begin diagnosis.C004ABrake Lining Wear SensorUrgentChassis & Brakes45–120 minutes for initial diagnosisC004A concerns brake lining wear sensor. Learn what this fault indicates and where to begin diagnosis.C004BBrake Fluid Level Sensor/Switch Circuit/OpenUrgentChassis & Brakes45–120 minutes for initial diagnosisC004B concerns brake fluid level sensor/switch circuit/open. Learn what this fault indicates and where to begin diagnosis.C004CBrake Booster Motor A Position Sensor Exceeded Learning LimitUrgentChassis & Brakes45–120 minutes for initial diagnosisC004C concerns brake booster motor a position sensor exceeded learning limit. Learn what this fault indicates and where to begin diagnosis.C004DBrake System Pressure Slow ResponseUrgentChassis & Brakes45–120 minutes for initial diagnosisC004D concerns brake system pressure slow response. Learn what this fault indicates and where to begin diagnosis.C004EBrake System Pressure Control Valve Actuator StuckUrgentChassis & Brakes45–120 minutes for initial diagnosisC004E concerns brake system pressure control valve actuator stuck. Learn what this fault indicates and where to begin diagnosis.C004FABS Control Module Over TemperatureCheck soonChassis & Brakes45–120 minutes for initial diagnosisC004F concerns abs control module over temperature. Learn what this fault indicates and where to begin diagnosis.C0051Steering Wheel Position SensorCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0051 means Steering Wheel Position Sensor. Review likely symptoms, causes, safety considerations, and a sensible diagnostic order.C0055Steering Wheel Position Sensor Signal DUrgentChassis & Brakes45–120 minutes for initial diagnosisC0055 concerns steering wheel position sensor signal d. Learn what this fault indicates and where to begin diagnosis.C0063Yaw Rate SensorCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0063 means Yaw Rate Sensor. Review likely symptoms, causes, safety considerations, and a sensible diagnostic order.C0065Vertical Acceleration SensorCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0065 concerns vertical acceleration sensor. Learn what this fault indicates and where to begin diagnosis.C0069Yaw Rate and Longitudinal Acceleration Sensor CorrelationCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0069 means Yaw Rate and Longitudinal Acceleration Sensor Correlation. Review likely symptoms, causes, safety considerations, and a sensible diagnostic order.C006AMulti-axis Acceleration SensorCheck soonChassis & Brakes45–120 minutes for initial diagnosisC006A concerns multi-axis acceleration sensor. Learn what this fault indicates and where to begin diagnosis.C006BStability System Active Too LongCheck soonChassis & Brakes45–120 minutes for initial diagnosisC006B concerns stability system active too long. Learn what this fault indicates and where to begin diagnosis.C006CStability SystemCheck soonChassis & Brakes45–120 minutes for initial diagnosisC006C concerns stability system. Learn what this fault indicates and where to begin diagnosis.C0076PWM for Traction ControlCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0076 concerns pwm for traction control. Learn what this fault indicates and where to begin diagnosis.C0077Low Tire PressureCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0077 concerns low tire pressure. Learn what this fault indicates and where to begin diagnosis.C0078Tire DiameterCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0078 concerns tire diameter. Learn what this fault indicates and where to begin diagnosis.C0079Variable Effort SteeringUrgentChassis & Brakes45–120 minutes for initial diagnosisC0079 concerns variable effort steering. Learn what this fault indicates and where to begin diagnosis.C0082Brake System Malfunction IndicatorUrgentChassis & Brakes45–120 minutes for initial diagnosisC0082 concerns brake system malfunction indicator. Learn what this fault indicates and where to begin diagnosis.C0083Tire Pressure Monitor Malfunction IndicatorLow priorityChassis & Brakes45–120 minutes for initial diagnosisC0083 means Tire Pressure Monitor Malfunction Indicator. Review likely symptoms, causes, safety considerations, and a sensible diagnostic order.C0084Traction Active IndicatorCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0084 concerns traction active indicator. Learn what this fault indicates and where to begin diagnosis.C0085Traction Disable IndicatorCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0085 concerns traction disable indicator. Learn what this fault indicates and where to begin diagnosis.C0086Vehicle Dynamics IndicatorCheck soonChassis & Brakes45–120 minutes for initial diagnosisC0086 concerns vehicle dynamics indicator. Learn what this fault indicates and where to begin diagnosis.