C0584

Brake Booster Motor B Phase U-V-W Circuit Low

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$111–333 (est.)

Symptoms

Increased brake pedal force
Reduced braking performance
Brake system fault light comes on
Unusual noises from the brake booster

Causes

Wiring harness damage
Brake booster motor malfunction
Power problems (low voltage)
Malfunction of the brake system control unit
Short circuit in the circuit

How to Fix

Check the voltage in the phase circuit U, V, W
Inspect the wiring harness for damage
Check the operation of the brake booster motor
Check the brake system control unit
Replace faulty components

Related codes

C0585 C0586 C0587