HAAS X Axis Z CH Mis Error

Been getting this error lately on the HAAS on startup. It stops the X axis from zeroing. Googled it and it says the X axis encoder is either dirty, wiring loose, or corrupted. I think its just dirty because if you reboot and restart enough times it’ll finally work.
I’d be happy try cleaning it up myself with someone else supervising or someone else can take a look at it.