Hill Hold Control Performance
The hill hold control function does not behave as expected during a hill start, often because brake pressure is not held long enough.
Affected components
- Abs hydraulic block
- Abs control module
- Brake pressure sensor
Common causes
- High likelihood: Hydraulic block internal leak
- Medium likelihood: Pressure sensor drift
Possible symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.