Hello, I have a 2002 Mercury Sable 3.0 OHC. My check engine light is on.

What is your question?

I went by the local O'Reilly and the machine put on it. The code is P1451 and it states possible control system canister solenoid. I have changed that and also bought a new gas cap. There is no gas smell or performance in the way the car performs. I'm on a limited budget so I have to do as much of the work as I can. My next task is to change the charcoal vapor canister. Can anyone tell me the exact location of the canister and possibly the way to test if it is bad before replacing please? Had the light turned off and it came right back on. I'm stumped at this point. Thanks in advance!