2016 Foreman 500 Service Manual

You might be in luck! There is a 2004-2016 Foreman 500 service manual covering the TRX500FM1/FM2/FM5/FM6/FM7/FE1/FE2/FA5/FA6/FA7 models linked from the manuals forum. Click here, scroll down and click the link, then browse for your model:

https://www.hondaatvforums.net/foru...nual-help/50817-service-manual-downloads.html

Let us know if we can help you... welcome to the forums!

In my experience code 23 usually requires a new O2 sensor to fix it. The main reason for O2 failure is infrequent use of the bike (or not running it far enough to get hot) and burning old, rotting fuel in it. Ethanol laced fuels are the worst... let us know how it goes for ya.

Thanks for letting us know how you fixed it!