ABS Front Inlet Valve Solenoid Circuit

What this code 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

1. Check ABS module connector for corrosion
2. Test solenoid resistance through module connector pins
3. Inspect wiring between ABS module and ECU
4. Command solenoid activation with scan tool
5. Check for internal module fault codes

Repair notes

If solenoid has failed internally, the ABS hydraulic modulator assembly must be replaced.

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