C0111
ABS Activation Excessively Long
ABS regulation has been active longer than the allowed duration during a single brake event, suggesting a sensor or hydraulic problem.
- 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.
- Extreme low-friction road conditionPossible
- Hydraulic block internal leakPossible
Parts involved
- ABS Control Module
- ABS Hydraulic Block
- Wheel Speed Sensors
C0111 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.