PO 442 Code 2001 - Assistance Needed.

[Lamf77]

Service Engine Light went on the other day. I used my scanner and the code was PO 442. Evaporative leak - small leak.
I had just filled up with gas the previous day, so I removed, tightened up the gas cap and use the scanner to erase the code.
Prayers excluded, I think it will eventually go back on.
My first question is can a gas cap go "bad"? In which case I will replace it and reset the code again.
More concerning to me is I had my fuel pump changed a few months back. They also installed a new fuel filter. Is there anything involved in those repairs which could have caused or triggered a lead somewhere?
Thanks in advance for any help,
Mike

 

[bradyelich]

Gas cap can wear out.

Evap is sealed system to keep gas fumes in the car not in the air. Obvious that there is a small leak in hoses or connections somewhere. When fuel pump changed, evap must be disconnected from fuel system, so yes, it was disturbed.