Network, generic

U0202 Lost Communication With Door Control Module D

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

U0202 means the body network no longer hears from door control module D, which most four-door layouts give to the right rear door. FCA STAR case S1908000143 (Rev. A, August 2020) records it on a minivan with Stow 'n Go seating: U0202 for the right rear door module came together with U0201 (left rear), U0230 (power liftgate) and the interior bus codes U0010/U0011, while the owner had a no-start, many lit warning lamps and single wiper strokes. The cause was a chafed body harness beside the right B-pillar, at the outer mount of the passenger seat or along the floor routing next to the seat storage bins, including splice S910. A dead rear window or lock on that side is typical; no MIL.

Likely causes

Body harness chafed at the B-pillar or under the seats (FCA minivan)
Broken wires in the rear door hinge harness
Corroded splice or door connector
Rear door module faulty

Symptoms

  • Right rear window or lock inoperative
  • Several warning lamps and further U-codes at the same time
  • Possible no-start or unrequested wiper stroke when the bus wiring is damaged

Repair estimate

DifficultyMediumDIY possible
Parts and labour€0–600
Time0.5–3 h

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

Parts involved

door module dcan bus

Related codes

U0201U0203U0230U0503U0010

References: static.nhtsa.gov, en.wikipedia.org.