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All - received the fault in the subject line above this past weekend. Error message stated 'No loss in performance expected'. Additional info: Plug:0, SPN: 111, FMI:1, Count:1. I searched the archives and didn't see any relevant info. Anyone have any ideas about this? The error message has not reappeared, and the Engine Diag Main screen says the current status is OK. Dealer is 4+ hours away, and they're not very responsive, so any info, hints, ideas, or thoughts regarding the seriousness of this are greatly appreciated!
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Coolant leak. I bet there is coolant in your bilge. Check at the heater if you have one. I had it in May. -
wrut - thanks for the reply. No coolant in the bilge - just a tiny, tiny amount of sheen, which I'm guessing came from a drop or two of oil or gas. Been a week since I got the code, has not come back and the bilge condition hasn't changed. Also having no issues with temperature, and there doesn't appear to be any issues with the heater. But I'll take a look at the heater for sure. I'll also double-check my coolant level, but based on what I've seen so far I don't have any reason to believe that there's a coolant leak.
Thanks again for the input though, let me know if you can think of anything else.Comment
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OK. I had the exact same code on my 2020 G23. It was a coolant leak at the heater, and that SPN/FMI code is coolant level specific. Good luck!Comment
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Good info - thanks again. I'll pull the front cushion tonight to inspect the heater, and double-check the coolant level. Thank you!Comment
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wrut - update. Just pulled the bow cushion and inspected the heater. Bone dry, including at the two red coolant hose connections. And dry in the compartment below the heater as well. Coolant level is fine, no coolant in bow, engine compartment, or main bilge. Will chalk it up to a mystery at this time…. Thanks again!Comment
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