C055F

BSCM/EBBC Hydraulic Unit Performance

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$167–556 (est.)

Symptoms

ESC/ESP indicator is on
Loss of effectiveness of the stabilization system
Unusual noises when operating the hydraulic unit
Poor handling on slippery roads

Causes

Hydraulic pump malfunction
Valve jamming in the block
Open or shorted wiring harness
Low brake fluid level
Software failure in the BSCM/EBBC control unit

How to Fix

Check the level and condition of the brake fluid
Diagnose the wiring harness and connectors of the hydraulic unit
Carry out computer diagnostics of the stabilization system
Check the operation of the hydraulic pump and valves
If necessary, replace the hydraulic unit or its components
Update BSCM/EBBC control unit software

Related codes

C0561 C0562 C0550 C0551