Have a 2008 8130 and having a little trouble with the auto steer. Just seems like it can't straighten out and the front wheels waggle back and forth. Some times it work sometimes not.  Shows a SSU 523826.14  or SSU 52386.10 code  and then cannot engage auto steer until you shut off tractor and then restart.   The operators manual doesn't have this code number listed. Had JD tech hook up computer and wheel angle sensor seemed to show right voltage.   Anybody ran across this code or have an idea what to look for on a fix?