C0591

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

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$167–333 (est.)

Symptoms

Reduced braking performance
Sometimes hard brake
ESC/ABS lamp comes on

Causes

Amplifier motor malfunction
Open or shorted wiring harness
Poor contact in the connector
Amplifier control unit malfunction

How to Fix

Diagnostics of the wiring harness for breaks and damage
Checking connectors and contacts
Amplifier motor testing
Replacing faulty components

Related codes

C0592 C0593 C0040