My 07 LSV shows this after a long day of pounding the system. In my case the fault that applies is the last "low voltage" You may see it as 1 fault, but in fact it is 3 "Temp sensor, ground voltage or low voltage" each of the 3 can have multiple reasons for the fault. Only a cefti. Indmar tech can debug this and find the actual cause. Did the fault show as an "active" or "inactive" fault in the system menu? If inactive, don't take it in, just reset and see what happens, if it's an active fault, take it in. A couple weeks back I check my diag menu after my engine was studering, All faults were inactive I changed the plugs, added fuel boost and cleared the codes, 2 trips out since and no codes. This is how it was explained to me by an Indmar/Merc Tech, I think I re-ittereated it properly.
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