U02C0Lost Communication With Active Radiator Air Flow Control Module A
- Generic OBD-II code · Network
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- J2012 gives the active radiator air flow module its own codes, separate from the active grille shutter modules U0284 and U0285. A Hyundai patent shows the kind of hardware meant: a pair of flaps between bumper intake and radiator, fed by an air guide, whose opening meters the cooling air. U02C0 means module A of such a system has stopped answering the engine or thermal controller. No manufacturer documents U02C0 publicly. Closely related shutter cases show how makers treat the loss: the 2026 Ram 1500 lights the MIL with U0285 for its lower shutter (STAR S2523000095), and Subaru traced U0284 on the 2017-2019 Impreza to water and corrosion at connector B63 (bulletin 07-140-18). Expect a warning lamp and flaps held in a safe position.
- What you may notice
- Check engine light or warning lamp
- Cooling flaps no longer move, slightly higher consumption
- Likely causes
- LikelyWater ingress and corrosion at the front-end connector or harness
- PossibleFlap unit or wiring damaged by stones or a minor collision
- PossibleActuator electronics of module A failed
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €60 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.