U065CLost Communication With Right Front Mode Actuator
- Generic OBD-II code · Network
- How the car detects it
- A right front mode actuator lets the passenger side choose its own outlets, or in some designs close its share of the air altogether; Denso's US 2020/0189351 describes a passenger-side door driven by its own actuator so that only the driver is served. U065C means the climate master can no longer reach that right-hand unit over LIN. No maker publishes the code, so detection time and fallback depend on the vehicle. In practice the right outlets keep their last position while the left side still follows commands, so the two halves of the cabin drift apart: the passenger may get floor air when the driver asks for vents, or no air at all if the door stopped closed. Windshield defog is mostly handled by the left or a common door and stays usable.
- What you may notice
- Passenger outlets ignore mode changes
- Little or no airflow on the passenger side
- Uneven comfort between driver and passenger
- Likely causes
- LikelyRight mode actuator internal fault
- PossibleConnector on the passenger side of the HVAC case loose or wet
- PossibleDamaged LIN branch toward the passenger side
- Repair
- Medium · Often possible to do yourself.Typical cost: €40 – €450
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.