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

C0573

Electric Park Brake Switch Circuit Malfunction

The electric park brake (EPB) module has detected an implausible signal from the operator switch. The EPB cannot be reliably applied or released by the driver until the fault is corrected.

SystemChassis
Typegeneric / SAE
GroupC0
Range / number5 / 73

Possible causes

  • EPB switch failed high
  • Wiring or connector fault medium

Symptoms

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

Inspection / repair

  • Difficulty: easy
  • DIY: possible
  • Estimated cost: 60–300 €
  • Estimated time: 0.3–1.5 h
  • Component: epb switch
  • Component: epb module
  • Component: switch wiring

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