U034B

Software Incompatibility With Brake Booster Control

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

~$167 (est.)

Symptoms

Increased brake pedal force
The malfunction indicator light comes on
Reduced braking performance
Possible errors in other systems
Incorrect operation of the braking assistance system

Causes

Outdated software
Error in module programming
Software version mismatch between modules
Data corruption in module memory
Software update problems

How to Fix

Check the software is up to date
Perform control module diagnostics
Update software
Check compatibility of software versions between modules
If necessary, reprogram the module
Repair only from an authorized dealer

Related codes

U034A U034C U034D