Honda Repair: P1457 code error, vacuum lines, sea foam

Question
Erik, I own a 2002 Honda Oddyessy. The error code I recieve is P1457/ P1457P. I have replaced the Cannister and Valve on it. Yet,After a reset the "check engine light"
comes back on.  What more can I do to find and resolve this problem??
Ted

Answer
 Well first thing to do is go to the local parts store get a product called "sea foam" This is a exclent fuel injection cleaner run this threw the tank take you car out and drive it also check your gas cap this is a common problem might just want to replace it the seal goes bad also some people dont tighten the cap till it clicks casueing a leak. It sounds like you have replace the main parts I would also check the vacuum lines as well.