U0155moderate severityNetwork
Lost Communication with Instrument Panel Cluster
on 2003 Cadillac DeVille 4.6L V8 Northstar · FWD
What this code means
Cannot communicate with the instrument cluster.
Symptoms
- Gauges not working
- No speedometer/tachometer
- Warning lights erratic
Common causes
- Cluster power failure
- CAN bus issue
- Cluster failure
Diagnostic steps
- Check cluster fuses
- Test power supply
- Check CAN wiring
Repair notes
Check fuses. Instrument cluster may need replacement or repair.
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