C0670
Electric Park Brake Actuator Left Circuit
The left electric park brake caliper actuator does not respond as commanded.
- Check engine light: Not always
- Emissions related: No
- Repair difficulty: hard
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.
- Actuator seized due to corrosionCommon
- Motor winding openPossible
Parts involved
- Epb Actuator Left
- Epb Control Module
- Actuator Wiring
C0670 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.