2013 G23 EMWT1 higher than expected code

[airden23]

Hello. Just got my boat in the water and the check engine light DTC 1415: EMWT1 higher than expected stage 1 code came acrross the screen. I just got the boat at the end of last summer and everything was fine through October; we ran it a lot. I then took it to the dealer and got the expensive winterize package. Given how expensive this winterize package is, I thought everything would be good to go but it turns out not! If anyone has experience with code I'd appreciate it. I have visually checked the raw water intake under the hull and the thru-hull as well as the water strainer and I can't see any obstructions. I am going to stick my finger in the intake and see if something is stuck in there.

[NautiqueJeff]

When was the impeller replaced last?

[airden23]

Impeller was replaced when winterized, so its brand new.

[RDT-G23]

Lean over the engine and inspect the serpentine. If it isn't an impeller or bad tensioner-it could be a bad raw water pump. We don't hear about water pumps going out like we used to, but it could be...

[uwhusky]

This happened to me yesterday even though the boat was seemingly running great. I shut the engine off, turned the batteries off and did a re-boot and re-started the engine. It never came back on the rest of the day.