Brake Booster Pressure Sensor Circuit Malfunction
The brake control module has detected an out-of-range or implausible signal from the brake booster pressure sensor. Brake assist and electronic boost functions may be limited.
Affected components
- Brake booster
- Booster pressure sensor
- Brake control module
Common causes
- High likelihood: Booster pressure sensor failed
- Medium likelihood: Wiring or connector fault to sensor
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.