I have a 2001 rubicon with 7420 miles. I have not driven it lightly. Just one day is stopped moving but only in 5th gear and then it goes slower. It idles just fine but when you rev it up it seems to bind, and also in 1st gear. There are no codes and I have reset the transmission. There are no noises. I have changed the angle sensor and checked the oil pump chain. What is the toubleshooting sequence.

 

Hopes its not the hydromechanical tranny it was/is the most over engineered ATV tranny ever made and is unserviceable.
Here,s a parts list Dirt Cheap Yamaha, Honda, & Polaris OEM Parts & Accessories – Cycle Parts Warehouse

The only option is to buy the whole unit for $1,153.85. OUCH!

 

take a video of it and post a link on here, my rubicon also did a crazy thing to where it wouldnt move and it was just mud in the right front brake switch.