U062BLost Communication With A/C Refrigerant Distribution Valve Actuator B
- Generic OBD-II code · Network
- How the car detects it
- Valve B is a further refrigerant switching point, for instance one that opens or closes a rear evaporator or a battery chiller path; the assignment of letters differs from maker to maker. U062B records that actuator B has stopped responding to its digital commands. While A still answers, the shared LIN master and the main feed are probably sound and the search narrows to B's branch. Egelhof's multi-way valve shows another design: one LIN-controlled motor unit with up to seven positions takes the place of up to four solenoid valves, so a single silent actuator can block several flow paths at once. No manufacturer documents U062B publicly. P0EE3 to P0EE6 cover the electrical circuit of valve B and P0EE2 a stuck valve.
- What you may notice
- One cooling branch (rear A/C or battery chiller) does not work
- Several heat-pump modes unavailable at once with a multi-way valve
- Thermal system warning message
- Likely causes
- LikelyWiring fault in the branch to valve actuator B
- PossibleLoose or corroded connector at actuator B
- PossibleActuator B electronics or motor unit 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.