P25C9

Brake System Control Module B Requested MIL Illumination

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–222 (est.)

Symptoms

Malfunction indicator lamp (MIL) is on
There may be problems with the operation of ABS or ESP
There may be errors in other vehicle systems
In some cases, a decrease in braking efficiency may be observed.

Causes

Malfunction of the brake control module
Problems with wiring or connectors
ABS sensor malfunction
Software error in control module
Module power problems

How to Fix

Conduct brake system diagnostics
Check the condition of the wiring and connectors
Test ABS sensors
Update control module software
If necessary, replace the brake control module

Related codes

P25C8 P25CA C0040