U0290Lost Communication With Active Aerodynamic Feature Control Module D
- Generic OBD-II code · Network
- Can trigger limp mode
- How the car detects it
- Module D is the last of four aerodynamic control addresses and fits vehicles in which aerodynamics are integrated with chassis functions. Ford's Mustang GTD is such a case: its hydraulic system serves both the suspension and the active aero elements, and service message SSM 55237 lists the warning Active Aero Fault together with suspension and front lift messages, caused by vehicle dynamics module software that reports faults wrongly and fixed by reprogramming. U0290 means that controller has lost the fourth aero module entirely. No manufacturer documents U0290 publicly or says which element module D drives. Depending on the design, a failure can freeze one element or cause the vehicle to restrict modes and top speed. For CARB, such parts are active off-cycle technology.
- What you may notice
- Active aero fault message
- Drive modes or top speed restricted
- Aero element stuck in one position
- Likely causes
- PossibleSoftware of module D or the vehicle dynamics controller
- PossibleBus or supply wiring to module D damaged
- PossibleMoisture or corrosion at the connector of module D
- RareModule D internally failed
- Repair
- Hard · Usually a job for a workshop.Typical cost: €0 – €2,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.