If this is new, think you have a wheel adjusted too tight. When this happens, during rest it develops a small flat spot which translates to mechanical ringing in the print. If you let the machine sit for a while, then slowly move that axis, do you feel a bump where it was at rest? All of the axes should be smooth with no felt noise. If you feel noise, you'll see it in prints.
If not, I would inspect your axis rails for any contaminants or damage, I used one of my printers so much I wore out the actual aluminum extrusion on the y axis and the bed was developing mechanical slop, which was actually difficult to find until I checked the bearing races.