Yamaha WaveRunner V1 2016 Owner's/Operator's Manual page 44

Instrument operation
EJU31635
Check engine warning
If a sensor malfunction or a short circuit is de-
tected, the check engine warning indicator
and the "WARNING" indicator light blink, and
the buzzer sounds intermittently.
If the check engine warning is activated, im-
mediately reduce the engine speed, return to
shore, and have a Yamaha dealer check the
engine.
TIP:
Push the select button on the multifunction
information center to stop the buzzer.
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