Check engine light? 1999 VW Passat?

[Livi]

So, I was wondering, I went to go fill up my 1999 Passat today and it was fine, I went to drive away and all the sudden my check engine light came on. It is up to date on everything, I need an oil change, but that's about it.

So I brought it to O'Riley's and they did a diagnostic test, and it came up with the code Po441 or P0441. I couldn't figure out if it was a zero or an "O". It came up as an emissions thing.

So, I was wondering, is it worth taking it in? Could it be the gas cap? I plan on getting my oil change tomorrow, so.

Any advice?

[FirebirdFarmboy]

Drive on. It could be the gas cap but if it isn't running any differently then no worries unless you have to pass an emission test. A new gas cap could be a good idea anyway. A 1999 is 15 years old. The rubber ring in the cap that seals to the tank filler pipe is probably hard, cracked and leaking by now.