C0145
ChassisBrake Systemhigh severityBrake Assist System Malfunction
What C0145 Means
The emergency brake assist system that provides additional braking force during panic stops has malfunctioned.
Symptoms
- Brake assist warning light
- Reduced braking force during emergency stops
- ABS light may also be on
Common Causes
- Brake pedal position sensor fault
- Brake pressure sensor malfunction
- ABS module failure
- Brake booster assist solenoid fault
Diagnostic Steps
- Test brake pedal position sensor operation
- Check brake pressure sensors
- Perform emergency stop test and observe brake assist activation
- Inspect brake booster assist solenoid if equipped
- Check for related pedal sensor codes
Where to start: Diagnose root sensor or actuator fault. Brake assist uses data from multiple sensors.
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