Ya, it's been coming on and off for awhile and actually when it came on today, I just did the egr block off with a dime and quarter and the quarter moved so I just put the egr valve back on. Possibly I didn't tighten it enough? I cleared the code, drove for a good 20 miles today and it came back on so I'll probably have to just try to tighten it down real good. Also my boost gauge reads normal vacuum as well.