Network, generic

U0504 Invalid Data Received From Door Control Module E

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

U0504 is the one door code of this series with a public manufacturer case. Ford names the electronic door latch controllers DCME to DCMH, and its programming applications list DCME as door control module E. In 2024–2026 Lincoln Nautilus and 2025–2027 Aviator, latch software stored B1262:92 in several of these modules, and U0504 could appear in the gearshift module, which evidently uses door status. The cluster then warned of a door fault, of the transmission not being in Park or of hill start assist being unavailable; the fix was a software update of DCME–DCMH (SSM 54938, 54978, 55241). No check engine light is mentioned. In GM's Saab 9-5 list the lost-communication partner U0203 is the left rear door switch panel.

Likely causes

Door latch module software (Lincoln Aviator/Nautilus, update DCME–DCMH)
Door control module E internally faulty
Damaged wiring between body and door

Symptoms

  • Door fault warning in the cluster
  • Transmission Not In Park or Hill Start Assist Not Available messages (Lincoln)
  • Door latch or electronic door release erratic

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€0–400
Time0.3–2 h

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

Parts involved

door control module e

Related codes

U0203U0503U0505

References: static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov, saabwisonline.com.