Guessing the part is either a mic or caliper (do you really expect people to recognise the part number?) , Then typical fauls are water/coolant ingresor, fine metal particles getting between capacitive sensors. Calipers can get scratches on the underside of the pcb - if any copper is visible you may have to paint with a thin layer of varnish
Remove battery, strip apart so you can clean it out. Use a plastic save solvent like iso propanol to wash out any obvious contamination.
Calibration is not normally effected.