B3A22

Active Aerodynamic Feature Control Module C

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$167–556 (est.)

Symptoms

Error message on the dashboard
Active aerodynamics elements do not work
Reduced stability at high speed

Causes

Open or short circuit in wiring harness
Control module malfunction
Mechanical failure of aerodynamic elements
Module power problems

How to Fix

Check fault codes with an OBD-II scanner
Inspect the wiring harness for damage
Check the power supply and ground of the module
Test the operation of aerodynamic elements
If necessary, replace the control module

Related codes

B3A21 B3A23 U0121