is there a known issue with the Vaport management valve
I have a 2012 Ford Focus, a couple of weeks ago my check engine light come on and the dealer told me it was the Vapor Management valve. He replaced it but a day later (about 200 miles) the check engine light returned. I took it back and they mention again that the Vapor Management Valve was bad, They said it may have been a defective one and again replaced it.
So now a day later (again about 200 miles) the check engine light is back on....
What is going on?