Did the alarm stop after you unplugged the drive lube wires??

I'm not sure if the 525EFI PCM stores the code. The alarm should stop even if its not cleared though.

Unplugged one wire then backed in the water and fired up, within few seconds / less than a minute the same alarm code went off. Repeated a number of time as I ran each engine for about 15 min each to get water temp up and start to see some oil temp as well.

Thanks for the comment. Just puzzled by this.

Is the 2 beep alarm sounding when either engine is running with the other engine off??

Haven't noticed that goes one way or the other When I tested it saturday I did run them one at a time and and it went off then on it's own and continued when I restarted the other.

Launched it yesterday and ran it for the afternoon. For the first 1/2 hour or so the alarm would go off every so often then it just went away. This is the same deal it went thru before. Will repeat the two beep alarm three times then stop, then repeat the same a while later.

Both run fine, oil pressure at 50, oil temp at 190, water temp at 160.

Just a bump here, looking for any help or suggestions.

Thanks.

Need to have it hooked to scanner when it is doing it. You need to figure out which engine is causing the issue.
Merc alarm codes

Thanks Griff.

Believe that is what I need to do now. Where I am there are few good Hi Perf Merc tecs, All the real vitals show fine so I am sure this is some electronic glitch. Oh for the old days of mechanical gauges and common sense. Love the solid performance of the EFI motors but they are a PIA for we old school guys. Just can not be a lot wrong with a boat that runs a solid 90 at will all afternoon long.

Thanks again for the advise.