U028E

Lost Communication with Active Aerodynamic Feature Control Module B

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–222 (est.)

Symptoms

Error message on the dashboard
Active aerodynamics elements do not work (for example, a spoiler)
Reduced aerodynamic efficiency at high speeds
There may be other related errors in the system

Causes

Open or short circuit in the module circuit
Active aerodynamics module B malfunction
Connector problems or contact corrosion
Software error in the module
Module power problems

How to Fix

Check the integrity of the wiring to the module
Check connectors and contacts for corrosion
Check power supply and grounding of the module
Scan the module for additional errors
If necessary, replace active aerodynamics module B

Related codes

U028D U028F U0290