Oil pressure alarm

[Nova10502]

This has been ongoing .
I have a2016 scarab 195.
Seems when engine gets up to temperature and I am going 25mph and then slow down the alarm sounds.
Have to put it in neutral and wait till it stops ,then it's fine.
I have changed the oil and oil level is fine. I have also changed the oil pressure switch.
At this point it's more annoying then anything else.
Any thoughts?

 

[Dixemon]

I would probably check all the connections between the oil pressure switch and where it terminates. spray the connections out and make sure there's no moisture. Wring all the wires for resistance and check for bad grounds.
there's always a possibility that there is a restriction somewhere in the oil passages or the oil pump is going bad/ bypassing?. I would actually find a way to hook a gauge up to where the oil pressure switch is located/ or an alternate aux port if available. Then monitor the oil pressure to determine if there is an actual discrepancy.
as to why it is having the problem after getting to operating temperature, Scratching my head on that. Perhaps, oil viscosity at temp has something to do with it. Either way, trying to verify good indications of oil system operation would be my goal moving forward. It may be a glitch in the ECU, but I wouldn't want to find out the hard way. Good luck, let us know how it goes.