Did it just start or has it been doing it since the oil change last November?
How many beeps is it?
Reason I ask is that I had this same thing happen to me a couple years ago on my 175 Verado. Had the oil and lower unit changed by our dealer here late May.
After a month of Grad parties we finally headed up to Rainy to camp for the 4th week. Go to take off and 6 beeps….WTH, never happened before. Found out its a non critical warning via the dealer in Int’l Falls (couldn’t get my dealer to get me an answer).
Camped for the week and brought it back to the dealer when i got back home, where they scanned it. Turns out the tech accidentally knocked a wire loose when he was doing the oil change. The warning was for low oil (if I recall) which it was obviously not.
Hooked up the wire and no more beeps. Check under the hood to see if you can find any loose/disconnected wires anywhere (I did this out on Rainy but missed wherever this one was).