OBD-II reference

All 9.533 generic OBD-II codes, explained in detail.

Causes, inspection steps and sources — a comprehensive DIY archive. Created and maintained with love for the detail. Good luck and have fun!

Chassis generic / SAE

C0594

Brake Pedal Travel Sensor

The brake control module has detected an implausible signal from the brake pedal travel sensor. Pedal travel is used by brake assist, regenerative braking and adaptive cruise control to estimate driver intent.

SystemChassis
Typegeneric / SAE
GroupC0
Range / number5 / 94

Possible causes

  • Pedal travel sensor failed high
  • Sensor not calibrated medium
  • Wiring or connector fault low

Symptoms

  • ABS warning light on
  • ESC/stability control deactivated
  • Possible reduced brake assist
  • Speedometer may behave erratically

Inspection / repair

  • Difficulty: medium
  • DIY: shop recommended
  • Estimated cost: 120–700 €
  • Estimated time: 0.5–2.5 h
  • Component: brake pedal travel sensor
  • Component: brake control module
  • Component: brake pedal assembly

Sources

References

How to read OBD-II codes

The first letter names the vehicle system, the second digit distinguishes generic from manufacturer-specific, the remaining digits group fault area and number.

PPowertrain: engine, transmission, emissions
BBody: chassis trim, comfort, interior
CChassis: suspension, brakes, steering
UNetwork: CAN, control modules, communication