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 lockedOperations to be carried out by the dealer
List of operations to be performed at 1000 km
Reading of the error memory with dds on the engine control units,
vehicle and abs
Change the engine oil
Change the engine oil filter
Check the indicators and lighting
Check the safety devices (side ...
Riding modes
The rider may select between four different riding modes (sport, touring,
urban and enduro) from the dashboard and via
the "turn indicator reset" button (3). Each riding mode contains settings for
the following:
The dtc set-up (sect. 6 - 7 "Dtc (ducati traction control) setting
function" ...
Entering pin code function for vehicle release
This function turns on the motorcycle "temporarily" in the
case of hf (hands free) system "malfunctions".
To activate the function, press the "emergency" hands free
button (7, fig. 87) If the motorcycle cannot be turned on using
the normal starter button.
After ...