U0225Lost Communication With Door Window Motor D
- Generic OBD-II code · Network
- How the car detects it
- U0225 marks door window motor D as missing from the bus. GM's PIT5981B names U0225 last in its list for 2021–2025 Escalade, Tahoe, Suburban and Yukon and notes that the cases came mainly from vehicles altered by upfitters, so door wiring touched during a conversion deserves the first look. How the loss is noticed is shown in NXP's AN2960 window-lift example: each slave carries a response-error signal for its last frame, which lets the master watch every node, and a slave that no longer answers its header at all is exactly what a lost-communication code describes. GM asks for such faults to be fixed before the air suspension is judged. No MIL.
- What you may notice
- Window in the affected door inoperative
- Air suspension not leveling on vehicles with door-ajar input via the motor
- Further lost-communication codes from other door nodes
- Likely causes
- LikelyDoor wiring changed during a vehicle conversion
- PossibleLIN wire to motor D chafed, open or shorted
- PossibleElectronics of window motor D failed
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.