Nice work on trying to work through the codes. Good info here so far. Thanks.
Regarding "
D7 Fuel tank sensor 2 (without fuel pump)", I would not worry about that one. BTW, it is one of the two Foxwell codes I have, and I am not worried at all about it. It's on my list, but I've got a long list.
That is the left side of the fuel tank, and unless you are in danger of running out of gas, it will not cause any engine problems. So I would recommend to not be distracted by that one, and keep going on the other things.