The hinge cable became disconnected, and was worn and frayed. So, I replaced them both anyways. Hinge cable comes as a set of two. I ordered two because I wasn't sure. Now I have a spare, just in case in happens again.
It only took 10 minutes to fix. Pulled the dishwasher out of the cabinet, removed the old hinge cable with pliers and replaced with new ones. They are a little shorter which causes the door to require more effort to open, but works.