I have a 2018 Honda BF115d that started beeping at the control panel while running. There are no indicator lights on other than the green oil pressure light. The beeping starts as soon as i fire up the engine. It seems to run fine other than the steady beeping. i looked up how to short the service plug to get flash codes. I get 1 long flash followed by 4 short flashes. I have looked online but I seem to be unable to find a code list. Does anybody know what this code is related to? I have cleared it but the beeping comes back when I start the engine.