08 TRX420ES Shifting Issue

New to the forum because of an issue I have with my machine not shifting. It will shift up through the gears, but will not shift down. Even when pushing the down button there is no noise, (not even trying to shift).

Battery is good. I have been reading a lot on these angle sensors. On my model there is a metal guard right below where the sensor attaches, so i don’t understand how to "preload" it if I can’t turn it due to the guard being there. I also get the code (23) which from what I’ve read is for the angle sensor. What is the correct procedure for resetting the computer. I downloaded a service manual so if you know page numbers that would help me. Thanks!

08 TRX420ES Shifting Issue

New to the forum because of an issue I have with my machine not shifting. It will shift up through the gears, but will not shift down. Even when pushing the down button there is no noise, (not even trying to shift).

Battery is good. I have been reading a lot on these angle sensors. On my model there is a metal guard right below where the sensor attaches, so i don’t understand how to "preload" it if I can’t turn it due to the guard being there. I also get the code (23) which from what I’ve read is for the angle sensor. What is the correct procedure for resetting the computer. I downloaded a service manual so if you know page numbers that would help me. Thanks!