Honda 2005 VTX1800C Owner's Manual page 33

Gauges, Indicators & Displays
VTX1800F
6 PGM-FI malfunction
indicator lamp (MIL)
(red)
24
Instruments & Controls
Lights when there is any abnormality in the PGM-FI
(Programmed Fuel Injection) system. Should also
light for a few seconds and then go off when the
ignition switch is turned ON and the engine stop
switch is at RUN. If the indicator comes on at any
other time, reduce speed and take your motorcycle to
a Honda dealer as soon as possible. Lamp Check.