Bank #1 O2 sensor low voltage which is the one near the muffler where others have found the lead breaks right at the sensor. There is another thread on a Z this that just happened. Yours is newer..or with lower mileage so if not this its a bad sensor or a bad connector. Unclip the lead and separate the connector and inspect. Clean with only electrical contact cleaner. If no cracking or breaking wires or the code doesn't go away after cleaning the connector, replace the O2 sensor would be my next step. But if you pull the sensor and find that it's carboned-up, there's something going on with that cylinder that needs addressed. You can try burning all the soot off with a propane tourch and blowing it out with air..nothing else but that cylinder may have a ring or valve seal...or a leaking injector problem... Here is that other thread:  https://cfmoto-forum.com/800ex800/p0031-p0132/

I removed the sensor and this is what it looked like. Checked the plugs and connections are fine. I torched the sensor and blew out with air. Still throwing code

Any O2 sensors that will work for this? Other than OEM

Solid check engine light and code p013116 flashing. 780 miles

I've read that it's an O2 sensor. This happened at around 16 miles but went away on it's own.

I'm no longer under warranty. Any ideas?

I'm still in the break in process had for 2 days 4.5hrs and today error code 131 and 130 came up and they are both O2 sensor related. Is this what I have to look forward to? I'm having my doubts about this machine....very disappointing