what are the possible reasons for a vapor error on a 1996 camaro?

Hi, Here is what I can find for now. The truth is there are a number of reasons for this problem. But the website I found seems to deal more with the car not showing the error code the way it should have. But if you read most of it there are some things that can be helpful in solving this problem the link is http://www.aircarecolorado.com/repair/acnews/jan02.htm Now this is not going to fix your problem, i'ts really just going to give you more insite on the problem itself. If you find a better source of information please let me know. This seems to be something that is going to take a bit more research. Good luck. And I hope this helps at least some. :) Terry

filling up with the car running will set this code .