C056F

Brake Booster Travel Sensor Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Increased brake pedal travel
Hard brake pedal
Brake system fault light comes on

Causes

Brake booster stroke sensor malfunction
Open or short circuit in wiring harness
Poor contact in connectors
Problems with power or circuit ground

How to Fix

Check the integrity of the wiring harness and connectors
Check the supply voltage and ground of the sensor circuit
Check the resistance of the brake booster stroke sensor
Replace sensor if necessary

Related codes