I have a 2015 rancher and last week I rode a long time with 5 digits on the gauge and It seemed like it should of been on the forth.Today I was on the forth digit and it went to the third in maybe 10 minutes.Its not sending any codes so what can it be,they don't have floats like the old ones where it could be sticking right?

 

welcome the forum looking at a 2015 honda rancher fuel system diagram, i see a float for fuel quantity. may be sticking, try some sea foam and see if it works better.