OBD-II code · Network
U065C Lost Communication With Right Front Mode Actuator
The vehicle bus reports loss of communication with smart right-front HVAC mode (vent/floor/defrost) actuator. Air distribution falls back to a default mode.
Is it safe to drive with U065C?
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
- 0.5–2 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Rf Mode Actuator, Vehicle Bus Wiring
Related codes
- U0659Lost Communication With Left Front Temperature Actuator
- U065ALost Communication With Right Front Temperature Actuator
- U065BLost Communication With Left Front Mode Actuator
- U065DLost Communication With Air Intake Actuator
- U065ELost Communication With Ram Air Actuator
- U065FLost Communication With Left Rear Temperature Actuator A
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.