Directly from the 2010 Challenger manual...I know...not much help !!!!
Check Engine Light
When the ECM detects a fault code,
the check engine light will come on
and a beep may sound.
Turn engine(s) off. Wait one (1) minute.
Restart engine(s). If light(s) remains lit,
take boat to nearest authorized Sea-Doo
sport boat dealer for servicing