Check Engine Light Again

I replaced the Canister Purge Solenoid a year ago for $40 at Autozone and my light stayed off till to 11-12-10. Can that part go bad within a year? :jerking:
Same code P0455 & P0442

first, what year is it? Second, if it's a 2005-present Dakota, they have problems with the actual canister failing causing these codes. If in doubt, go to a shop and have them put smoke in the evap system; this will help them locate the source of the leak.

I actully replaced the Canister Purge Solenoid and vacuumed out the canister and hoses and the Engine Light stayed off. So far I'm up to 230 miles. By the way its a 2003 Dodge Dakota 2 Wheel SP