U025F

Lost Communication With Electronic Brake Booster Control Module B

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$167–500 (est.)

Symptoms

Check engine light is on
Increased brake pedal force
Loss of electric brake booster function
Activating the emergency brake system
Error messages on the dashboard

Causes

Broken or damaged wiring to the brake booster module
Electric brake booster module B malfunction
Connector problems or contact corrosion
Module software failures
Problems with module power or grounding

How to Fix

Check the integrity of the wiring harness to the module
Inspect the module connectors for corrosion or damage.
Check the supply voltage and grounding of the module
Scan the module for additional errors
If necessary, replace the electric brake booster module B
Repair only from an authorized dealer

Related codes

U025E U0260 U0261