Hello, and thank you for using this service. I'll be helping you with your problem today.
This is a common failure for this model washer and unfortunately there is no way to "reset" the issue. The pressure sensor switch inside the control panel has failed and it's agitating to early instead of holding off until the tub is full of water. If you have a model number I can look up the part you'd need to replace if you'd like.
MVWC6ESWW1 serial #cy3440978
Perfect, thank you.
above is a link to your part
you mentioned a water pressure sensor switch, yet the part # you suggested I ordered was for a water temperature switch. Are they the same switch, and does it affect the water being added at the end of the spin cycle?