C0268
Brake Pump Run Time Exceeded
The brake control module has detected that the brake pump has run longer than the allowed maximum time. This typically indicates the pump cannot reach target pressure due to a hydraulic leak, air in the system or a worn pump.
- 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.
- Hydraulic leak in brake systemCommon
- Air in brake systemPossible
- Brake pump worn or weakLess likely
Parts involved
- Brake Pump Motor
- ABS Hydraulic Unit
- Brake Lines
C0268 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.