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 lockedTank filler plug
Note
To open or close the tank filler plug using the active
key, set the metal part in the middle position, as shown on
page 86.
Opening
Lift the cover (1, fig. 100) And insert the active or passive key
into the lock. Give the key a 1/4 turn clockwise to unlock.
Lift the plug (2, fig. 101) ...
Checking the coolant level
To the specified intervals in the "scheduled maintenance chart" (sect. 4 - 2)
Check the coolant level contained in
the expansion reservoir, on the right side of the vehicle.
The coolant level must be between the max. And min marks on the tank.
If the level is low, top up with the recommende ...
Oxygen sensors
Introduction
An on-off type oxygen sensor (in normal operating conditions, the voltage
generated by the sensors switches between a
value close to 1v and a value close to 0v) is mounted on each of the exhaust
manifold of the diavel.
Each oxygen sensor has its own internal heater, which recei ...