from the 2000 dodge manual
In the event that the instrument cluster looses
communication with all other modules on the PCI
bus, the cluster will display “nobus” in the VF display.
The VF display also displays “Door”, “Cruise”,
“Trac”, and odometer trip or total.
If the cluster does not detect voltage on the courtesy
lamp circuit, the message “FUSE” will alternate
with the odometer/trip odometer for 30 seconds after
the ignition is turned on and for 15 seconds after the
vehicle is first moved. The lack of voltage can be due
to the M1 Fused B(+) (IOD) fuse being open, a bad or
missing courtesy lamp bulb, or a circuit problem.