Hey- sounds like you’re having the same thing we did, which ended up being an easy fix
When you go out, pay close attention to the gauges when the alarm sounds. What is your voltage meter reading, what RPMs, what speed, etc. If it’s in the 3000-3500 RPM you likely have the same thing we did...
Thank you for all the additional information.
The knock sensors were tested, and reported no voltage. They were doing the hammer test as well.
The page I attached in one of my earlier posts is the code report from the original mechanic’s computer, but they added the troubleshooting step...
Correction. We have CAN bus gauges. The speedometer has a small LCD screen where you can toggle through the different readings.
The description we get for SPN 924 is “check engine lamp driver fault” / water in bellows. (Bellows are dry)
There was also a SPN 1213 MIL driver fault.
There was...
They’re low voltage to gauge codes- oil pressure gauge, temperature gauge, trim gauge. I failed to attach the image. Again, our boat is all analog gauges, not digital.
Update since second opinion mechanic
-voltage readings normal, no drops or issues
-plugs look fine but still factory so...
Our local boat dealer pulled the codes, not sure with which tool. I attached the details.
I believe you put in another post that if you have analog meters, the SPN 697/698/699 could be ignored. We have analog meters, but the speedometer has a small LCD reading. Every meter reports normal...
