Diagnostic system

ABS, Brake and Traction Control Codes

Interpret wheel-speed, hydraulic pump, solenoid, relay and brake-switch faults with clear safety guidance and vehicle-specific cautions.

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ABS, Brake and Traction Codes diagnostic illustration

Basic braking and electronic assistance are different

An ABS fault may disable anti-lock braking, traction control and stability control even when the hydraulic brakes still operate. Any change in pedal feel, fluid level or basic braking performance needs immediate professional attention.

C-code definitions can vary

Confirm the definition with a capable scan tool and service information for the exact vehicle. Compare all four wheel-speed signals before replacing the sensor named by a generic description.