Network, generic

U0207 Lost Communication With Moveable Roof Control Module A

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

U0207 concerns moveable roof control module A, the electronics of a power sunroof or glass roof. GM uses it: the 2011 Saab 9-5 list names the moveable roof control module, and GM preliminary information PIT5606J (GMC Acadia, Cadillac XT5 2017–2021) counts U0207 among the codes that appear after water gets in – mostly at the upper windshield corners hidden under the glass, rarely past the outer sunroof seal or a drain hose – or when the dash harness rubs at the steering column. Since roof modules sit in the headliner close to the drains, a leak can reach the unit or its plug. A sunroof that ignores its switch is the usual sign; U020A is the second roof unit, U0508 invalid data. No MIL.

Likely causes

Water leak at windshield corners, sunroof seal or blocked drain hose
Dash harness chafed at the steering column (GM Acadia/XT5)
Corroded connector at the roof module
Roof module faulty

Symptoms

  • Sunroof does not respond to the switch
  • Damp headliner or water marks near the A-pillar
  • Further U-codes in several modules

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€50–900
Time0.5–4 h

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

Parts involved

moveable roof module acan bus

Related codes

U020AU0206U0508

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