B3A33

Active Aerodynamic Feature Control Module D Power Mode Circuit Performance

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Inoperative active aerodynamic elements
Error message on the instrument panel
Disabling active aerodynamics

Causes

Open or short circuit in wiring harness
Oxidation of connector contacts
Power relay fault
Problems with the control module
ECU software error

How to Fix

Check the integrity of the wiring harness to module D
Clean connector contacts
Check voltage and ground at the module connector
Test the power relay
Replacing the module if necessary
Update ECU software (if available)

Related codes

B3A31 B3A32 B3A34