2016 RZ2 SPN 3256 FMI 5

[Jonnyyea]

Hey everyone, tootling back from a surf run today while the ballast drained and when I hit the home screen on the display I got a flashing red triangle and found fault code SPN 3256 FMI 5 in the computer. It looks like this is an O2 sensor? Anyway to easily clear the fault and see if it happens again? I'm on a houseboat at Lake Shasta for a couple days, so willing to try some easy fixes if there are any? From what I gather online, it appears as though it is ok to drive, however, there will be an annoying beep, any confirmation of that? tIA for any assistance / feedback. Pic for attention.

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[freeheel4life]

Bank 1 (port side) post cat o2 sensor. You can try cycling master off, then on. Then key on to start and shut off 5 times repeatedly to see if it resets.