OBD-II code · Network
U062A Lost Communication With A/C Refrigerant Distribution Valve Actuator A
The vehicle bus reports loss of communication with smart A/C refrigerant distribution valve actuator A. Routing of refrigerant between cabin / battery / power-electronics chillers cannot be commanded.
Is it safe to drive with U062A?
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
- 0.5–3 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- AC Distribution Valve Actuator A, Vehicle Bus Wiring
Related codes
- U062BLost Communication With A/C Refrigerant Distribution Valve Actuator B
- U062CLost Communication With A/C Refrigerant Distribution Valve Actuator C
- U062DLost Communication With A/C Refrigerant Distribution Valve Actuator D
- U0627Lost Communication With A/C Refrigerant Temperature Sensor A
- U0628Lost Communication With A/C Refrigerant Pressure Sensor B
- U0629Lost Communication With A/C Refrigerant Temperature Sensor B
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.