Fault codes
Dds: horn diagnosis -> short circuit to ground (s.C. Gnd).
Dashboard: the error "claxon" (horn) is shown on the service display. The eobd warning light activates.
Wiring diagram

Db dashboard connection, s horn button. 5 Blue/white - b/w, 1 red/blue - r/b, db 19 purple/black - v/bk.
Location of connections and components

Location of left hand handlebar switchgear set connection.

Location of horn with relative connection.

Pin numbering for wiring harness side dashboard connector.
Note
Check integrity of electric circuit - short-circuit to vdc = with dashboard on, using a voltmeter, a voltage is measured between the wire tested and ground.
Check integrity of electric circuit - short-circuit to ground = with the battery cables disconnected, using an ohmmeter, continuity is detected between the wire tested and ground.
Check integrity of electric circuit - open circuit = with the battery cables disconnected, using an ohmmeter, no continuity is detected between the two ends of the wire tested.
Low beam lights not working
Turn indicators not workingRefuelling
Never overfill the tank when refuelling. The fuel level should
always be below the rim of the filler recess.
Warning
Use low-lead fuel with 95 octane rating at origin
minimum (see "top-ups" table, page 173).
Check that no fuel is trapped in the filler cap recess.
...
Steering release error - steering still locked
The activation of this (amber yellow) "warning" indicates
that the hands free system was not able to extract the
steering lock.
Warning
In this case, ducati recommends turning the vehicle
off and on (key-off / key-on) holding the handlebar pressed
down to the end stop. If the signal ...
Recovery procedure in the event of electric steering lock fault
If any fault occurs during activation of the electric steering lock: for
example, if the pin jams, if the handlebar is moved
while the pin is deployed or if there is excessive strain on the electric pin
actuator motor, the electric steering lock is
automatically disengaged and the hands free s ...