Not start, like starter not turning over. Move your control lever a little frwd & backward while you have key turned.
That sensor has a little springed ball that fits in a groove on a cam when its in neutral. Your linkage can be a little off with your control lever in neutral but sensor ball is not in groove on cam. You can test sensor with ohm meter I think. Disconnect sensor & remove pin at control valve linkage. Attach leads to sensor and move control valve linkage. You'll feel spring ball from valve grab cam groove. That's neutral. That'll help isolate if it's that sensor causing issues. If you want to take sensor out, you'll need to drop hydraulic fluid or have another sensor ready to pop in that hole