U04B5

Invalid Data Received from Brake System Control Module B

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine Light Is On
Errors in related systems (ABS/ESP)
Reduced functionality of braking systems
Problems with cruise control
Entries in the on-board computer error log

Causes

Open or short circuit in wiring harness
Poor contact in module connectors
Brake control module B malfunction
Module power problems
Software failure in the control unit

How to Fix

Check the integrity of wiring and connectors
Scan all modules for additional errors
Check the power supply and ground of the module
Update control unit software
Repair only from an authorized dealer

Related codes

U04B4 U04B6 C0050