OBD-II code · Network
U0237 Lost Communication with Sunroof Assembly Control Module
The body bus has lost the sunroof assembly module. Pinch protection and tilt/slide functions cannot be commanded.
Is it safe to drive with U0237?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyWater ingress
- Less likelyGateway module routing CAN messages incorrectly
- Less likelyCAN terminating resistor (120 Ω) drifted out of spec
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Sunroof Module, Lin Wiring
Related codes
- U0234Lost Communication With Convenience Recall Module
- U0235Lost Communication with Cruise Control Front Distance Range Sensor
- U0236Lost Communication with Steering Angle Sensor Module
- U0238Lost Communication With Digital Audio Control Module D
- U0239Lost Communication With Entrapment Control Module A
- U023ALost Communication With Image Processing Module A
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.