U062CLost Communication With A/C Refrigerant Distribution Valve Actuator C
- Generic OBD-II code · Network
- How the car detects it
- A third distribution valve only exists in elaborate thermal systems that combine cabin cooling, heat pump, dehumidification and battery conditioning in one refrigerant loop. U062C is stored when valve actuator C fails to reply on its serial line. In such layouts several actuators often hang on one LIN segment; if C and D are lost together while A and B still answer, check the common wiring section, splice or supply of that segment before replacing any valve. No manufacturer documents U062C publicly. CARB asks for a dedicated fault for missing communication with digital components only where they are monitored for emissions or other diagnostics, which is rarely the case for cabin climate valves.
- What you may notice
- A single heat-pump or dehumidifying mode no longer works
- Windows fog more easily in heating mode
- Climate system warning or reduced comfort without warning
- Likely causes
- LikelyShared LIN segment, splice or supply feeding valve C damaged (often with U062D)
- PossibleConnector at actuator C loose, wet or corroded
- PossibleActuator C electronics failed
- Repair
- Hard · Usually a job for a workshop.Typical cost: €80 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.