C0750
Cruise Control Brake Switch
The cruise control or chassis module has detected an implausible signal from the dedicated cruise control brake switch. This switch is independent from the stop lamp switch and disengages cruise control when the driver brakes.
- 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.
- Cruise control brake switch failed or misadjustedCommon
- Wiring or connector faultPossible
- Internal cruise control module faultLess likely
Parts involved
- Cruise Brake Switch
- Cruise Control Module
- Brake Pedal Assembly
C0750 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.