Penta V6-280 alarm in with DTCs 1155 and 1157

[parsenault]

Hi forum members,

We purchased a 2017 Regal 2000 with a Volvo Penta V6-280-J in the fall. When we test drove it prior to purchase for about an hour there were no issues. The dealership winterized it after we purchased it and it went into storage for the winter. When we launched it for the first time about two weeks ago it started beeping one short beep about every minute. This weekend I hooked up Rinda Diacom to it and it's showing two stored DTCs and one active DTC. The stored DTCs are 1155 and 1157 with the active being 1155. It had less than a quarter tank of fuel when it came out of storage. We filled it up with premium marine fuel and the first alarm happened just before filling it with fuel when we launched it.

It looks like 1155 and 1157 are both related to a lean fuel condition. Is it likely that it's related to an O2 sensor or is there another condition likely that's causing the O2 sensor to report the excess lean condition? I've read other people have had the issue and resolved it by replacing the spark plugs. The engine has about 117hrs and is probably on the original plugs.

Thanks in advance.

 

[alldodge]

Welcome

dealership winterized it after we purchased it and it went into storage for the winter. When we launched it for the first time about two weeks ago it started beeping one short beep about every minute.

The dealer should know better but if they fogged the motor then the fogging oil would have coated the O2 and other sensors. This can cause all kinds of problems. Don't know if the dealer would admit to it if they did.

Do check fuel pressure and see if it's 50-60 psi.

 

[parsenault]

Replaced the battery and all DTCs went away and no more limp mode. Ran just the way it should.

 

[alldodge]

Thanks for the follow up

 

[Fun Times]

That's got to be one of the most trickiest things to diagnose on really modern engine systems...While we all know 12v power has to be near perfect and if it's not perfect (But maybe close) it leads the "mind" to everything else under the hatch mostly because the scanner is saying these things are not in specification so look here (< at least on the forums) but don't just spend money over there when over there turns out to be the case such as this incidence being the battery all in which wouldn't be the first time being a battery issue but still odd because the engine is running and you'd just assume the alternator would mask the issue.

I seem to recall @alldodge and @tpenfield put in new better batteries almost as a just because maybe or maybe not an issue...Don't recall if it helped or not though in their case.

Thanks for sharing parsenault, hope things continue to run smooth for you.

 

[tpenfield]

Interesting that the batteries were causing those codes. I'd give it some time before you do a victory dance though . . .

On my 2016 Mercruiser, I had a low voltage warning that would not go away . . . until I joined the single house battery (which was a bit weak) with a bank of 4 inverter batteries.

It seems that the engine control system in total get power from 2 sources and when one is weaker than the other all heck breaks loose. Even though, folks have told me that the engine systems run off of the engine battery. My experience indicates otherwise.

 

[parsenault]

I figure the O2 sensor was the canary in the coal mine because this particular type is so sensitive to small changes in voltage. From what I understand it’s a very small range that it responds to then it drops off a cliff. As you said the reference voltage is so important to these sensitive electronics. And if it’s off then all kinds of strange things happen it seems. The indicator was when I ran Diacom again after changing the battery. The short term fuel trim went from +35% before the battery swap (max limit that triggered the DTC) down to (-2 to 0%).