U062A code meaning
Lost Communication With A/C Refrigerant Distribution Valve Actuator A
What U062A means
Heat pumps and battery-cooling circuits need valves that redirect refrigerant, for example hot gas from the outer heat exchanger to an inner one when the system switches from cooling to heating. Suppliers such as Egelhof build these as motor-driven switching valves that replace two or more solenoid valves and are commanded digitally, partly via LIN. U062A is set when actuator A no longer answers its controller. No manufacturer documents U062A publicly. How serious it is depends on what the valve feeds: BMW, for one, lit the MIL on the i3 for a jammed refrigerant shutoff valve in the battery cooling branch (its own code 21F0D0). Hardwired versions of valve A report P2611 to P2613, P266F or the mechanical fault P0EC9.
U062A at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyHard
- Typical labor0.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U062A
- Switching between cooling and heat-pump mode fails
- No cabin heat from the heat pump or no cooling in one branch
- Thermal system warning, possibly reduced charging or drive power
Common causes of U062A
- Most likelyLIN, supply or ground wire to valve actuator A damaged
- PossibleMoisture or corrosion in the actuator connector
- PossibleActuator electronics failed
- Less likelySoftware fault in the controlling module (reprogramming may be needed)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Ac distribution valve actuator aVehicle bus wiring
What each part of U062A means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 2A | The exact fault in that area. |
What to do next
- Note U062A and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about U062A
What does U062A mean?
U062A means "Lost Communication With A/C Refrigerant Distribution Valve Actuator A". Heat pumps and battery-cooling circuits need valves that redirect refrigerant, for example hot gas from the outer heat exchanger to an inner one when the system switches from cooling to heating. It is a generic code, so it means the same on every make.
Is it safe to drive with U062A?
U062A does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will U062A fail an emissions test?
U062A is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is U062A to fix?
Difficulty: hard. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will U062A clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.