Hey, evap code... always goto the ross tech wiki to begin your troubleshooting process; when you scan and have a trouble code to work with:
use the search area; in the top right hand corner:
Ross-Tech Wiki
results of searching your code:
http://wiki.ross-tech.com/wiki/index...4/P0440/001088
Check out the first link; diy testing: "evap system leak checks"
http://newbeetle.org/forums/gtsearch...=1448j357568j8
Look up testing procedures in the factory manual here:
Volkswagen Workshop Manuals
Hopefully, this gets you started in the right direction; testing step by step and then through a process of elimination, you find the problem! Good luck!
use the search area; in the top right hand corner:
Ross-Tech Wiki
results of searching your code:
http://wiki.ross-tech.com/wiki/index...4/P0440/001088
Check out the first link; diy testing: "evap system leak checks"
http://newbeetle.org/forums/gtsearch...=1448j357568j8
Look up testing procedures in the factory manual here:
Volkswagen Workshop Manuals
Hopefully, this gets you started in the right direction; testing step by step and then through a process of elimination, you find the problem! Good luck!