OBD-II code · Network
U0290 Lost Communication With Active Aerodynamic Feature Control Module D
The vehicle bus reports loss of communication with active aerodynamic feature module D. Powered spoilers, air-dams or wheel-arch closures controlled by this node default to a fixed position.
Is it safe to drive with U0290?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyBus wiring open or shorted
- PossibleModule without power or ground
- PossibleModule failed
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Active Aero Module D, Vehicle Bus Wiring
Related codes
- U028DLost Communication With Active Aerodynamic Feature Control Module A
- U028ELost Communication With Active Aerodynamic Feature Control Module B
- U028FLost Communication With Active Aerodynamic Feature Control Module C
- U0291Lost Communication With Gear Shift Control Module B
- U0292Lost Communication With Drive Motor Control Module B
- U0293Lost Communication with Hybrid Vehicle Control System
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.