The activation of this (amber yellow) "warning" indicates that the engine coolant temperature is high.
It is activated when the temperature reaches 121C (250f).
Note
In this case, ducati recommends stopping and shutting off the engine immediately; make sure that the fans are working.

Low hands free key (hf) battery level
Steering release error - steering still lockedRefitting the abs control unit
If the brake hoses (7), (8), (9) and (10) on the abs control unit are changed
or removed, ensure that the fittings on the
control unit are positioned correctly.
Warning
If incorrectly positioned, the hose can affect brake operation and
foul moving parts. Position the hose as shown in the
fig ...
Protective apparel
Always wear a helmet. Most motorcycle accident fatalities
are due to head injuries.
For safety eye protection, gloves, and high top, sturdy boots
should also be worn.
The exhaust system becomes very hot during operation,
never touch the exhaust system. Wear clothing that fully
covers your ...
Air intake
Air filter
Right air duct
Screw
Air temperature sensor
Screw
Left air duct
Sealing washer
Threaded insert
Spacer
Clamp
Breather hose
Spare parts catalogue
Diavel abs air intake - oil breather
Diavel carbon
abs
air intake - oil breather
Important
Bold reference num ...