Engine alarm beeping constantly.

[cambsy]

I have a 2004 Malibu Sunscape with the 340 monsoon engine in it. The alarm is beeping constantly since we took it out on the water (after sitting all winter) and the oil pressure gauge is reading a bit high.....aside from doing a complete oil change and filter change, what else could cause this? Is there any other codes that would make it beep like this?

Thanks!

[RTS]

Oil Pressure Switch is the first thing I would look at.  A common failure item, and it seems there is a rash of them every summer after boats have been laid up all winter.

[RTS]

And by the way, high oil pressure will not make your '04 beep in any way.  Only oil related thing that will cause alarm is oil pressure as measured by the switch (not the sender that feeds dash gauge) 'reporting' less than 3 psi (or 6 psi...one or the other) of oil pressure.