B3A23

Active Aerodynamic Feature Control Module D

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–222 (est.)

Symptoms

Active aerodynamic elements do not work
Error message on the dashboard
Reduced aerodynamic efficiency at high speeds

Causes

Damage to module wiring harness
Solenoid valve or actuator malfunction
Software failure in the control module
Mechanical damage to aerodynamic elements

How to Fix

Check wiring harness and module connectors
Scan the module for errors
Check the operation of drives and solenoids
If necessary, replace the control module

Related codes

B3A21 B3A22 B3A24