OBD-II code · Chassis
C0578 Park Brake Switch Stuck Open
The EPB module has detected that the park brake operator switch remains in the open (released) state when an apply request is expected. Operation of the EPB by the driver is restricted.
Is it safe to drive with C0578?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyEPB switch contacts stuck open
- PossibleWiring break in switch circuit
- Less likelyCarbon or debris buildup preventing free movement
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Epb Switch, Epb Module, Switch Wiring
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.