ENGINE ALERT WARNING

[Jerold Geisenheimer]

Today started the boat, no problem, but the engine alarm and check engine code comes on. Water temp and oil pressure are fine. Engine runs fine. Any ideas before I call tech? Thanks. Jerry

 

[trailertrawlerkismet]

Is water coming out of your exhaust? If so great but if not you may have either an impeller that needs replaced or the thru hull is blocked. Is there a specific engine code displayed?

Jim

 

[pleeson]

What about the actual engine coolant level? Sometimes there is a slow leak at the hot water tank heat exchange clamps or similar connections...

 

[LADYBUG TOO]

If you have a Yanmar engine with the i5601E display you can go to the diagnostic codes menu by exiting the alarm screen and holding down the far right button at the bottom of the display. Depending on the software version on your display you can read the codes and look them up in your engine manual. In my case if I start with a low battery, the voltage drop will trigger one or more Glow Plug alarms. The alarms can be silenced by pushing buttons 1 and 4 simultaneously when on the code menu. Typically after the engine runs a bit my codes clear.

Pat
Ladybug, Too

 

[Jerold Geisenheimer]

Thanks for your input. Will try pressing 1 and 4 on display and then see if a specific code comes up. Jerry

 

[ophthodawg]

If you have a Yanmar engine with the i5601E display you can go to the diagnostic codes menu by exiting the alarm screen and holding down the far right button at the bottom of the display. Depending on the software version on your display you can read the codes and look them up in your engine manual. In my case if I start with a low battery, the voltage drop will trigger one or more Glow Plug alarms. The alarms can be silenced by pushing buttons 1 and 4 simultaneously when on the code menu. Typically after the engine runs a bit my codes clear.

Pat
Ladybug, Too

Hi folks. Ive had two instances of the Yanmar ecu triggering an alarm. I tried the button 1 & 4 press but found it had no effect until disconnecting both the engine start and house batteries to fully power cycle off the i5601E … it appears there is a relay that sends power from the house battery to power the alarm and ECU… in the event of a battery disconnect the Yanmar appears to have a relay allowing the i5601E to continue functioning when the engine is running… anyway im happy the alarm is now silenced because its nearly impossible to make radio or phonecalls once the alarm has been triggered … not the safest software on that i5601E … in my opinion

 

[SkookumR29]

Hi folks. Ive had two instances of the Yanmar ecu triggering an alarm. I tried the button 1 & 4 press but found it had no effect until disconnecting both the engine start and house batteries to fully power cycle off the i5601E … it appears there is a relay that sends power from the house battery to power the alarm and ECU… in the event of a battery disconnect the Yanmar appears to have a relay allowing the i5601E to continue functioning when the engine is running… anyway im happy the alarm is now silenced because its nearly impossible to make radio or phonecalls once the alarm has been triggered … not the safest software on that i5601E … in my opinion

Hello Pat,
We have a 2011 29 Tug and last fall I had similar issues. Long story short, it turned out to be a failed glow plug.

I first got a general Engine Alarm on the Yanmar display panel with alarm sounding as well as we were backing out of our slip in November of 2024. There were no codes listed when I queried that and I could not get the alarm to silence without shutting the engine off. Upon restart, the alarming started again. I spoke to the guys at Gallery Marine on Lake Union in Seattle and they recalled this issue coming up a couple of times in the last decade. Through their research with the factory, the glow plug turned out to be the problem. Gallery was the original Yanmar factory rep that provided warranty service for Fluid Motion and early tug owners. I initially had Gallery purchase a single glow plug at approximately $95.00 and had their guy Kevin come to my boat in Des Moines. He tested all six glow plugs and did find one to be bad. Replaced it and all was good for about two months, at which time I got another similar alarm. This time I ordered five more glow plugs and had Kevin come back to install those. I kept four of the old ones as spares.

One thing I did learn in this process is that when a glow plug goes bad, if you continue to run the engine and warm it up above 125 degrees, you can shut the engine off to clear the alarm, restart and the alarm will be cleared.

Hope this helps.