P0403
 

I have a 2000 eclipse gt with 58000 miles. The car has a p0403 code, so far I have clean the egr valve and replaced the maf. The car runs and idle perfect I have read that the solenoid is a common problem for this code, I would like to buy a new one but I don't know if I need to buy an EGR Vacuum solenoid or a canister purge valve solenoid.
Can somebody tell me? Thanks