C0590

Brake Booster Motor A Phase U-V-W Current High

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$167–444 (est.)

Symptoms

The brake system fault indicator is on
Increased brake pedal force
Failures in the operation of the emergency braking system
Disabling adaptive cruise control

Causes

Short circuit in the motor windings
Motor brush wear
Damage to the amplifier wiring harness
Malfunction of the motor driver in the control unit
Mechanical jamming of the amplifier

How to Fix

Check the resistance of the motor windings
Inspect the condition of the brushes and commutator
Check the integrity of the wiring harness
Test the operation of the motor driver
If necessary, replace the brake booster assembly

Related codes

C0580 C0595 C05A0