I just purchased this boat. I haven't had it out on the water yet, but it runs perfect on muffs without a load. The previous owner said that it bogged down bad when trying to drive it on the water. I'm assuming it's in protection mode for some reason. The oil pressure gauge shows that it has good oil pressure and it increases when revving the engine. The ECT sensor ohms out correctly for ambient temperature. I think the only other thing that will trigger protection mode is the exhaust riser temperature sensors, but I don't know how to test them. The audible alarm beeps 2 times, pauses, beeps 2 times, pauses and so on. It starts beeping immediately when I turn on the key and never stops until the key is off. I have also pulled the codes by shorting the diagnostic connector and hooking up a light. The first time I pulled codes I got 12, 14, and 81. I cleared the codes and ran it on muffs. After running it I get code 81, which could be multiple things, but none of them would trigger the audible alarm. The alarm kept beeping even after clearing the codes. I don't have a scan tool, but I also don't want to be at the mercy of the dealer just yet. Does anybody have any suggestions? It seems that most posts I've seen about the alarm is that it doesn't beep until the engine is running, but mine does anytime the ECM has power.