C0589

Brake Booster Motor A Position Sensor Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Reduced braking performance
Hard brake pedal
Unstable operation of the brake booster

Causes

Brake booster motor position sensor malfunction
Open or short circuit in wiring harness
Damage to connectors or corrosion of contacts
Malfunction of the brake booster control unit

How to Fix

Check the integrity of the wiring harness and connectors
Test the brake booster motor position sensor
Replace the sensor if a fault is detected
Check and, if necessary, replace the brake booster control unit

Related codes

C0590 C0591 C0592