U0172low severityNetwork
Lost Communication with Heads-Up Display Module
on 2016 Cadillac Escalade 6.2L V8 · RWD
What this code means
Cannot communicate with the secondary or extended heads-up display controller.
Symptoms
- HUD content missing
- HUD data not refreshing
- HUD brightness not adjusting
- Partial HUD display
Common causes
- HUD controller failure
- CAN bus wiring
- Module power loss
- Fuse blown
Diagnostic steps
- Check HUD controller fuse
- Test power and ground
- Check CAN wiring
- Test HUD display unit
- Check combiner glass position
Repair notes
Check fuses and combiner glass alignment. HUD module may need reprogramming.
Other Network codes on this vehicle
U0001
High Speed CAN Communication Bus
U0002
High Speed CAN Communication Bus Performance
U0003
High Speed CAN Communication Bus (+) Open
U0004
High Speed CAN Communication Bus (+) Low
U0005
High Speed CAN Communication Bus (+) High
U0006
High Speed CAN Communication Bus (-) Open
U0007
High Speed CAN Communication Bus (-) Low
U0008
High Speed CAN Communication Bus (-) High
U0009
High Speed CAN Communication Bus Shorted Together
U0010
Medium Speed CAN Communication Bus