I've had my WRX for about 4 weeks now and I've had it to the dealership 3 times. CEL p1443 keeps appearing, and they keep replacing the evaporator vent valve. I think there has to be something else wrong with the car that it keeps throwing this code. I've searched for two days now on the subject and now I am here. Has anybody else had this problem?
Thank you for your help!!

 

2 days later now. They think that is the charcoal canister that is causing the problems. The charcoal inside the canister is breakingdown and being discharged through the lines and clogging the vent valve. If any more problems arise I'll document them here so somebodyelse doesn't have to go through what I'm going through. Thanks Zombiedog for the reply.