@fcwilt Yes, I am using PID mode. After replacing the fuse it did heat up just fine the first time and sustained a temp around 90C to complete a PID autotune. I received the faults when I then tried to run off a print afterward.
I've soldered the wires to the bed and was able to heat it again and begin a print. I suspect the issue was probably due to the cruddy connection where the wires enter the bed probably adding a bit of resistance there. My bed and hot end sensors now give matching readings at room temp whereas before they were at least a few degrees apart so this theory seems to check out so far.