Network, generic

U0512 Invalid Data Received From Seat Control Module D

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

U0512 has a documented GM case that goes beyond comfort functions. On the 2020 Cadillac CT5 with option UGN, the image processing module, which handles camera data for driver assistance, could set U0512 and display Service Driver Assist. GM named software as the cause, told technicians to clear the code and recheck, and to follow normal diagnosis only if it returned at once (PIC6408, revised as PIC6408A in October 2020). The bulletin does not say which seat information the camera module uses. In other cars, module D is simply a fourth seat unit; Ford's matching of letters to generic slots is shown by U024B/U024C for its seat modules G and H. Lost contact with module D gives U0211.

Likely causes

Software in the receiving module (Cadillac CT5 image processing module)
Seat module D configuration or software mismatch
Damaged harness or connector under the seat

Symptoms

  • Service Driver Assist message (Cadillac CT5)
  • Driver assistance features temporarily unavailable
  • Seat functions served by module D not responding

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€0–500
Time0.3–2.5 h

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

Parts involved

seat control module d

Related codes

U0211U0511U050A

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