U062D code meaning
Lost Communication With A/C Refrigerant Distribution Valve Actuator D
What U062D means
Actuator D is the fourth refrigerant switching valve and appears only in loops with many separately controlled paths; because a single multi-way unit can replace up to four solenoid valves, many vehicles never use the letter D. U062D means the controller sent requests to valve D and got no valid answer within its expected schedule. No manufacturer documents U062D publicly. A useful check is whether the actuator wakes up and draws current when commanded: no current hints at supply or ground, current without reply at the LIN line or the actuator itself. Replacing a valve body means opening the refrigerant circuit, so recovery, evacuation and recharge are part of the job. Related actuators are U062A to U062C.
U062D 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 U062D
- One refrigerant path cannot be opened or closed
- Reduced heating or cooling in certain modes
Common causes of U062D
- Most likelySupply or ground of actuator D missing (no current draw when commanded)
- PossibleLIN line to actuator D open or shorted
- PossibleActuator D electronics failed
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 dVehicle bus wiring
What each part of U062D means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 2D | The exact fault in that area. |
What to do next
- Note U062D 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 U062D
What does U062D mean?
U062D means "Lost Communication With A/C Refrigerant Distribution Valve Actuator D". Actuator D is the fourth refrigerant switching valve and appears only in loops with many separately controlled paths; because a single multi-way unit can replace up to four solenoid valves, many vehicles never use the letter D. It is a generic code, so it means the same on every make.
Is it safe to drive with U062D?
U062D does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will U062D fail an emissions test?
U062D 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 U062D to fix?
Difficulty: hard. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will U062D clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.