Washer will not stop filling

Washer will not stop filling on any size load setting. Water will stop if you push the timer button in or unplug the inlet valve. Where do I go from here. Checked tubing from pressure switch good and tight on both ends. Removed tubing no air leaks. Timer will not go to next mode and water will not shut off. How do I tell if it is pressure switch or timer.
PLEASE HELP.

It is very likely the pressure switch. With the machine filling, blow into the tube (plug up the tub opening so it will not spill water all over) and see if you can make the switch cut off and stop the water. If so this will confirm the pressure switch is the problem.