Thanks mcguyver and clark u. Been living with this problem for a couple of months, seems to be getting worse and throwing wrench, codes 564, 776, 782. in response to clark u I do not see light on the prox sensor and do not see any tests in the maintainance mode to check it. Did not see tests for pots in maintainance mode however calibrated handle left right and center values are as follows rt 3.86 left 1.3 center 2.6. Also did not understand "access 123 manual to navigate the menu" In response to mcguyver as I said ran calibration on handles but see no calibration for sensor in the menu.