This is from the shop service manual:
Possible problems with code P0440:
-Hose or tube crakced, hole, damaged or loose seal
-Fuel tank cap incorrectly installed
-Vacuum hose crakced, hole, blocked, damaged or disconnected
-Fuel tank crakced, hole or damaged
-Charcoal canister cracked, hole or damaged
-Open or short in vapor pressure sensor circuit
-Vapor pressure sensor
-Fuel tank over fill check valve cracked or damaged
-ECM
The possible problems for P0446 are along the same lines as these. Seems to be there's too much crap that can go wrong with cars.
[ 05-14-2003, 07:19 PM: Message edited by: ryansceli ]