U0207 code meaning
Lost Communication With Moveable Roof Control Module A
What U0207 means
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.
U0207 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0207
- Sunroof does not respond to the switch
- Damp headliner or water marks near the A-pillar
- Further U-codes in several modules
Common causes of U0207
- Most likelyWater leak at windshield corners, sunroof seal or blocked drain hose
- PossibleDash harness chafed at the steering column (GM Acadia/XT5)
- PossibleCorroded connector at the roof module
- Less likelyRoof module faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Moveable roof module aCAN bus
What each part of U0207 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 07 | The exact fault in that area. |
What to do next
- Note U0207 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about U0207
What does U0207 mean?
U0207 means "Lost Communication With Moveable Roof Control Module A". U0207 concerns moveable roof control module A, the electronics of a power sunroof or glass roof. It is a generic code, so it means the same on every make.
Is it safe to drive with U0207?
U0207 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will U0207 fail an emissions test?
U0207 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is U0207 to fix?
Difficulty: medium. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will U0207 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.