Lost Communication with Navigation Display Module
2016-2016 Cadillac ATS 2.5L I4
The 2016 Cadillac ATS is equipped with a 2.5L inline-4 engine. Below you'll find detailed u0159 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Cannot communicate with the navigation system display module.
Symptoms
- Navigation screen blank
- Map not displaying
- Navigation voice prompts not working
- Touchscreen unresponsive
Common Causes
- Navigation module failure
- CAN/MOST bus wiring
- Module power loss
- Fuse blown
- Display unit failure
Diagnostic Steps
- Check navigation module fuse
- Test power and ground
- Check data bus wiring
- Inspect display connections
- Test module with diagnostics
Repair Notes
Check fuses and display power supply. Navigation module may need software update.
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
U0159 on Other Vehicles
Common Questions
What does code U0159 mean on a 2016-2016 Cadillac ATS?
U0159 stands for "Lost Communication with Navigation Display Module". Cannot communicate with the navigation system display module.
What are the symptoms of U0159 on a Cadillac ATS?
Common symptoms of U0159 include: Navigation screen blank, Map not displaying, Navigation voice prompts not working, Touchscreen unresponsive.
What causes U0159 on a 2016-2016 Cadillac ATS?
Common causes of U0159 include: Navigation module failure, CAN/MOST bus wiring, Module power loss, Fuse blown, Display unit failure.
Last updated: March 2026