Invalid Data Received From Sunroof Control Module
The U0448 code means the vehicle's onboard diagnostic system has detected: Invalid Data Received From Sunroof Control Module. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $200 - $800 (parts and labor)
Network codes mean modules are not communicating. You need a scanner that reads all systems to find the problem.
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Common Symptoms
- Sunroof not responding to controls
- Sunroof opening or closing on its own
- Sunroof stuck partially open
- Tilt feature not working
- Sunroof wind deflector stuck
Probable Causes (Ranked by Likelihood)
- Failed sunroof module Very High
- Sunroof track obstruction High
- CAN bus data error Moderate
- Sunroof motor wearing out Low
Step-by-Step Diagnostic Procedure
-
Check sunroof track for debris
-
Try sunroof manual override
-
Scan sunroof module for codes
-
Test sunroof motor with direct power
Frequently Asked Questions
Can I drive with U0448?
Yes. If stuck open, try the manual override and avoid driving in rain.
What causes U0448?
Usually debris in the track or a worn sunroof motor.
How do I close a stuck sunroof?
Most vehicles have a manual override. Check the owners manual for the location.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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