C0055
ChassisAbs Tractionhigh severityABS Front Inlet Valve Solenoid Circuit
What C0055 Means
Malfunction detected in the front ABS inlet valve solenoid circuit inside the hydraulic modulator.
Symptoms
- ABS warning light on
- ABS not functioning on front wheels
- Longer stopping distances
- Brake pedal pulsation absent during ABS event
Common Causes
- Faulty inlet valve solenoid
- ABS module internal failure
- Wiring to module damaged
- Corroded module connector
Diagnostic Steps
- Check ABS module connector for corrosion
- Test solenoid resistance through module connector pins
- Inspect wiring between ABS module and ECU
- Command solenoid activation with scan tool
- Check for internal module fault codes
Where to start: If solenoid has failed internally, the ABS hydraulic modulator assembly must be replaced.
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