C058B

Brake Booster Motor B Position Sensor Circuit/Open

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Hard brake pedal
Reduced braking performance
The brake system fault light comes on
Unusual noises from the brake booster

Causes

Open or short circuit in wiring harness
Amplifier motor position sensor malfunction
Damage to contacts or connectors
Internal fault in brake booster motor

How to Fix

Check the integrity of the wiring harness and contacts
Test the position sensor with a multimeter
Replace the sensor if a fault is detected
Check the operation of the brake booster motor
Reset the error and check the system after repair

Related codes

C058A C058C C058D