My name is XXXXX XXXXX X am an appliance expert here with the website and I can try to help you today.
Do you have the full model number of the washer?
Depending on the model it can either be a sensor or the motor or belt. But please get back to me here with the full model number so that way I can bring up the model specific info for your machine and help you better.
And if this is a front loader we can also check the door lock as well. just to be sure.\