U0200Lost Communication With Door Control Module B
- Generic OBD-II code · Network
- How the car detects it
- U0200 means door control module B has dropped off the bus; most makers use B for the front passenger door. For the 2005–2010 Chrysler 300 and Charger, bulletin 08-061-12 names it the passenger door module and replaces it when locks and windows stay dead. Audi bulletin 2051276 (Q5 2018) finds U020000 in gateway J533 with a dead passenger window or lock switch, sometimes U10BA00 or U111100 in the driver door, and cures it with a one-minute fuse reset and new software for J387. Stellantis case S2423000040 (Durango 2023) sees U0200-00 with an intermittent passenger lock and checks pins, the lock rod and finally the latch. VW tech tip 97-21-02 pairs U019900 or U020000 with loose pins at the A-pillar. Usually no MIL; U0501 is invalid data.
- What you may notice
- Passenger window or lock switch inoperative
- Door does not lock or unlock centrally, sometimes intermittent
- Child lock or door warning message in the cluster
- Likely causes
- LikelyPassenger door module software (Audi Q5 J387 update)
- LikelyLoose, bent or corroded pins in the door or A-pillar connector
- PossibleBroken wires in the door hinge harness
- RarePassenger door module faulty (Chrysler 300/Charger)
- Repair
- Medium · Often possible to do yourself.Typical cost: €0 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.