Network, generic

U0200 Lost Communication With Door Control Module B

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

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.

Likely causes

Passenger door module software (Audi Q5 J387 update)
Loose, bent or corroded pins in the door or A-pillar connector
Broken wires in the door hinge harness
Passenger door module faulty (Chrysler 300/Charger)

Symptoms

  • Passenger window or lock switch inoperative
  • Door does not lock or unlock centrally, sometimes intermittent
  • Child lock or door warning message in the cluster

Repair estimate

DifficultyMediumDIY possible
Parts and labour€0–700
Time0.3–3 h

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

Parts involved

door module bcan bus

Related codes

U0199U0201U0501U0140

References: static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov.