Network, generic

U022E Lost Communication With Object Detection Maintenance Control Module A

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

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.

Likely causes

Module A without power or ground (fuse, connector)
Damaged or corroded bus wiring to module A
Washer fluid or water ingress at the module or its plug
Module A faulty or not programmed

Symptoms

  • Sensor cleaning or sensor blocked warning
  • Driver assistance features unavailable

Repair estimate

DifficultyHardWorkshop job
Parts and labour€80–900
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

obj detect module acan bus

Related codes

U022FU052FU0530

References: patents.google.com, saabwisonline.com.