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.
- Check engine light: Not always
- Emissions related: No
- Repair difficulty: easy
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Common causes
Ordered by how often each turns out to be the cause.
- EPB switch failedCommon
- Wiring or connector faultPossible
Parts involved
- Epb Switch
- Epb Module
- Switch Wiring
C0573 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.