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 lockedRemoval of the intake manifold and coolant union
Loosen the clips (f) and remove the hoses (t).
Remove the manifolds (25) undoing the screws (21).
Loosen the clamp (a) and remove the hose (b). Remove the union (12) and
recover the seal (24).
...
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 ...
Refitting the rear wheel
Lubricate the wheel shaft threaded end with prescribed grease.
Insert the wheel shaft by matching (a) with pins (b).
Install spacer (3) with the conical surface faced to the wheel conical
surface, washer (2), apply prescribed grease to nut
(1) and insert it by hand (1).
Tighten the ...