U0290

Lost Communication with Active Aerodynamic Feature Control Module D

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Active aerodynamics elements do not work
Error message on the dashboard
Aerodynamic elements are fixed in one position
Reduced efficiency at high speeds

Causes

Open or short circuit in the communication circuit
Aerodynamics control module malfunction
Problems with the CAN bus
Poor contact in connectors
Software error in the ECU

How to Fix

Check the integrity of the wiring to the aerodynamics module
Diagnose the state of the CAN bus
Check module connectors and contacts
Scan the module for errors
If necessary, replace the control module

Related codes

U0280 U0291 U0292