How can I repair a P2066 code, Fuel level sensor "b"?

Did you replace the fuel pump 'module'? That's that whole big white thing that goes in the tank with the pump and gauge unit all in one "modular" piece.

could be gauge or sending unit.where did you buy your parts?

I am having the same problem. I replaced the whole sending unit and still the same issue. my gauge is all over the place. let hope some can help. I you figured it out please let me know.

They have two pumps . One is main and one is aux. Both have senders if code is for b then change passenger side unit