Ducati Diavel Carbon Owner's Manual page 162

Entering PIN CODE function for overriding
purposes
This function allows the rider to "temporarily" turn on
the motorcycle in case of HF (Hands Free) system
"malfunction".
If the motorcycle cannot be turned on using the
normal starter button, press the "emergency" Hands
Free button (7) to activate the function.
After pressing the button, the instrument panel
activates the "INSERT PIN CODE" indication on the
display with four dashes " - - - -" in the bottom line,
highlighted in green, for you to enter the 4 digit PIN
code.
Entering the code:
Press the reset button (4).
Each time you press button (2), the displayed number
increases from "0" to "9" and then returns to "0".
Press the reset button (4) to confirm each number.
Repeat the procedure until entering the fourth digit.
Press the reset button (4) again to confirm.
If the code is incorrect, the instrument panel will
return to the four dashes "- - - -" indication to allow you
to enter the code again.
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Note
There is no limit to the number of times the
code can be re-entered; the instrument panel will turn
off automatically 120 seconds after any attempt to
enter the code.
If the entered code is correct, the message
"CORRECT" will flash on the display for 3 seconds.
After 3 seconds, the instrument panel will return to
the "normal" view (with all indications active).
From this moment, the vehicle can be started using
the start button (Key-On).
Note
The vehicle can be started until a Key-Off is
performed. If the problem still persists upon the next
starting attempt, repeat the procedure from the
beginning in order to start the motorcycle
"temporarily" again.
Important
If this procedure is necessary in order to start
the vehicle, contact an Authorized Ducati Service
Center as soon as possible to fix the problem.