Lost Communication with Headlamp Leveling Module
2007-2007 Cadillac CTS 3.2L V6
The 2007 Cadillac CTS is equipped with a 3.2L V6 engine. Below you'll find detailed u0200 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Cannot communicate with the automatic headlamp leveling control module.
Symptoms
- Headlight level warning
- Headlights aimed incorrectly
- Auto-leveling not functioning
- Headlight error message
Common Causes
- Headlamp leveling module failure
- CAN bus wiring
- Module power loss
- Fuse blown
- Leveling motor failure
- Height sensor issue
Diagnostic Steps
- Check leveling module fuse
- Test power and ground
- Check CAN wiring
- Test leveling motors
- Check ride height sensor input
Repair Notes
Check fuses and headlamp leveling motors. System uses suspension height sensors for input.
Related Codes
Other Network Codes
- U0001High Speed CAN Communication Bus
- U0002High Speed CAN Communication Bus Performance
- U0003High Speed CAN Communication Bus (+) Open
- U0004High Speed CAN Communication Bus (+) Low
- U0005High Speed CAN Communication Bus (+) High
- U0006High Speed CAN Communication Bus (-) Open
- U0007High Speed CAN Communication Bus (-) Low
- U0008High Speed CAN Communication Bus (-) High
- U0009High Speed CAN Communication Bus Shorted Together
- U0010Medium Speed CAN Communication Bus
U0200 on Other Vehicles
Common Questions
What does code U0200 mean on a 2007-2007 Cadillac CTS?
U0200 stands for "Lost Communication with Headlamp Leveling Module". Cannot communicate with the automatic headlamp leveling control module.
What are the symptoms of U0200 on a Cadillac CTS?
Common symptoms of U0200 include: Headlight level warning, Headlights aimed incorrectly, Auto-leveling not functioning, Headlight error message.
What causes U0200 on a 2007-2007 Cadillac CTS?
Common causes of U0200 include: Headlamp leveling module failure, CAN bus wiring, Module power loss, Fuse blown, Leveling motor failure, Height sensor issue.
Last updated: March 2026