U022E code meaning
Lost Communication With Object Detection Maintenance Control Module A
What U022E means
U022E reports that object detection maintenance control module A has stopped talking on the vehicle network. The J2012 name points to a unit that keeps the detection sensors of the driver assistance system usable, for example by washing or heating camera, radar or lidar covers; patent US11077472B2 describes such a cleaning device for an object detection sensor. No manufacturer documents U022E publicly, so the real job of module A, its bus and its mounting place come from the maker's wiring data. GM's general logic for the U0100-U02FF range applies: a receiving unit misses the periodic status message at 9-16 V and stores the code. U022F is module B, U052F flags implausible data from A. Expect sensor cleaning or assistance warnings; no MIL is known.
U022E at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyHard
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U022E
- Sensor cleaning or sensor blocked warning
- Driver assistance features unavailable
Common causes of U022E
- Most likelyModule A without power or ground (fuse, connector)
- PossibleDamaged or corroded bus wiring to module A
- PossibleWasher fluid or water ingress at the module or its plug
- Less likelyModule A faulty or not programmed
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Obj detect module aCAN bus
What each part of U022E means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 2E | The exact fault in that area. |
What to do next
- Note U022E 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 U022E
What does U022E mean?
U022E means "Lost Communication With Object Detection Maintenance Control Module A". U022E reports that object detection maintenance control module A has stopped talking on the vehicle network. It is a generic code, so it means the same on every make.
Is it safe to drive with U022E?
U022E does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will U022E fail an emissions test?
U022E 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 U022E to fix?
Difficulty: hard. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will U022E clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.