When hot it runs erratic and unable to select gears. No management code shows. When cool, runs  ok. Could it be a spark plug issue?   It is a 2019 model, 650 miles.

Forgot to ask, what panels need removing to gain access to the sensor?
Are there any diagrams or photos available?
Thank you.

Thank you for the information, I will let you know how I get on.

Have E5 symbol on dash, indicates air inlet pressure sensor problem.
Where abouts is the sensor located ?
2019 model just purchased, and no knowledge of quads, only motorcycles.
I am in the UK, just joined,  so hello to you all.