PWM Brake Pressure Modulation Circuit
The PWM control of the brake pressure modulation valves is faulty.
Affected components
- Abs hydraulic block
- Abs control module
Common causes
- High likelihood: Module PWM output stage fault
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.