2002 Sea Ray 5.0 260 HP MPI Alpha 1 Gen 2. Took boat out and after a while started to get 2 beeps about 1 minute apart. Everything looked fine. New water pump about 2 wks. ago. Did it for about an hour. This happened a few years ago and it was the sonsor that senses water pressure was bad and replaced. I stopped for fuel and wiggled the connection and beep stopped the first time I restarted motor. If that was prob. I am thinking the sensor would not send signal. Did it reset itself by starting motor? Does the beep warn of anything else? I know it stores a code but I am far from a Merc dealer that I trust. What do these code readers cost to buy? I repeat--two beeps about a minute apart- Not low oil or low drive oil oe overheat. Thank you. RR