Don't know if your P0461 is the same as my P0461, but I get a P0461 code just about every first EOC after filling the tank. Usually the gas gauge goes to zero at the same time, and stays there until I cancel the code.
I also get a low fuel alarm (3 chimes and a message) at bump start after an EOC more than about 0.6 miles. The gas gauge will drop to zero, then back to where it belongs. It normally does this without setting a trouble code.
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