U0169
Lost Communication With Sunroof Control Module
Network / communication
Generic OBD-II
Low
What it means
U0169 sets when the network loses contact with the sunroof control module. This affects the powered sunroof's operation only; the vehicle drives normally and no drivetrain or safety systems are involved, so it's a comfort-feature fault.
Low
Can I keep driving? Yes — the car is fine to drive; only the sunroof may stop working (possibly stuck in position) and a warning light may appear.
Common symptoms
What you'll notice
- Sunroof won't open, close, or tilt
- Sunroof control module missing from a scan
- Warning or indicator light for the accessory
- Sometimes a companion communication code
Common causes
Most likely first
- Blown fuse or lost power/ground to the sunroof moduleLikely
- Damaged or corroded wiring/connectorCommon
- CAN bus fault to the moduleCommon
- Failed sunroof control moduleLess often
- Water intrusion into the connector (common near a sunroof)Less often
How to diagnose & fix
Work through it in order
- Scan for other communication codes to check the scope.
- Check the sunroof module's fuse, power, and ground.
- Inspect the connector and wiring for moisture and corrosion — sunroof drains can leak onto them.
- Verify CAN bus continuity to the module.
- If supply and bus are good, suspect the module.
FAQ
Quick answers
Is it safe to drive with U0169?+
Yes. Only the sunroof is affected. If it's stuck open, close it manually or cover it until repaired.
Can I just clear U0169?+
It returns if the module still can't communicate. Fix the wiring, supply, or module first.
Related codes
Often seen with U0169
Read & clear U0169 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX