I ordered the part after googling possible causes because it was cheap enough and easy to replace.
One thing you have to do though, at least with my dishwasher, was run a diagnostic cycle before it turned the element back on. Just press any 3 buttons in order 1,2,3,1,2,3,1,2,3 and it starts the diagnostic and you can hit the start/resume button to cycle through to the end then it works.