U022FLost Communication With Object Detection Maintenance Control Module B
- Generic OBD-II code · Network
- How the car detects it
- U022F is the B counterpart: a control unit expects messages from object detection maintenance control module B and receives none. Cars with many cameras and radars could split sensor upkeep, such as washer pumps, nozzle valves or cover heaters, across two units, and B would then serve the second group; which sensors that is stays the maker's choice, because no manufacturer documents U022F publicly. Setting follows the GM pattern for lost communication codes, a missing periodic status frame with supply between 9 and 16 V. If U022E is stored as well, check a shared fuse, ground or bus branch before suspecting either unit. U0530 covers invalid data from B. A soiled sensor may then remain uncleaned, and assistance functions can shut down.
- What you may notice
- Sensor blocked or cleaning unavailable message
- Camera or radar based assistance switched off
- Likely causes
- LikelyFuse, ground or bus branch shared with module A interrupted
- PossibleCorroded plug at module B
- RareModule B faulty or software not matching
- 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.