Network, generic

U0553 Invalid Data Received From Lighting Control Module — Rear B

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

Rear lighting control module B is a second controller for the rear lamps. U0553 is set when its messages are received but their content is implausible. No manufacturer documents U0553 publicly, yet the partner code U0252 hints at what the module often is: GM's list for the Saab 9-5 calls U0252 the trailer interface control module, and Ford links U0252 and U0137 on 2021–2024 F-150, Expedition, Navigator and the 2024 Ranger to a trailer module that dropped off the CAN bus, fixed by disconnecting and reprogramming it. On 2023–2025 Super Duty trucks, a badly tightened ground G201 set U0252 among other codes. U0484 is the same fault for rear module A. Trailer or rear lamp functions may fail; no MIL.

Likely causes

Trailer or rear lighting module software hung or outdated (Ford remedy is reprogramming)
Loose or badly tightened ground connection
Corrosion or short at the trailer socket feeding back into the module
Rear lighting control module B internally faulty

Symptoms

  • Trailer lamps or trailer brake function reported as faulty
  • Individual rear lamps not working
  • Several warning messages after battery or ground work

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€40–600
Time0.3–2 h

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

Parts involved

rear lighting module b

Related codes

U0252U0484U0137

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