U065ELost Communication With Ram Air Actuator
- Generic OBD-II code · Network
- How the car detects it
- At speed, the wind pushes extra outside air through the cowl inlet into the climate housing. Some vehicles therefore fit the fresh-air path with a motorised ram air flap that narrows the opening as dynamic pressure rises, so airflow and noise stay steady; Behr's US 5,645,479 nests it with the recirculation flap, and Daimler's DE 10 2010 025 623 drives it through a non-linear linkage for fine throttling near closed. Others, like Honda in WO 2012/115719, use the inlet door for the same job and have no separate flap. U065E means the master has lost its LIN link to that flap's actuator. No maker documents the code publicly. A flap stuck open lets the cabin airflow surge and rush at motorway speed; one stuck nearly shut starves the vents at low speed.
- What you may notice
- Airflow rises noticeably with road speed
- Air rush noise from the vents at high speed
- Weak airflow at low speed if the flap stopped nearly closed
- Likely causes
- LikelyRam air flap actuator electronics failed
- PossibleMoisture or debris from the cowl reaching the actuator connector
- RareLIN wire to the ram air actuator chafed or disconnected
- Repair
- Medium · Usually a job for a workshop.Typical cost: €60 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.