Honda Shadow Phantom 2020 Manual page 22

Indicators
If one of these indicators does not come on when it should, have your dealer check for
problems.
20
PGM-FI (Programmed Fuel Injection)
malfunction indicator lamp (MIL)
Comes on briefly when the ignition switch is turned to
the ON position with the engine stop switch in the
(Run) position.
If it comes on while engine is running:
High coolant temperature indicator
Comes on briefly when the ignition switch is turned to
the ON position.
If it comes on while riding:
Low oil pressure indicator
Comes on when the ignition switch is turned to the
ON position. Goes off when the engine starts.
If it comes on while engine is running:
(P.83)
(P.82)
(P.83)