tons of egr codes

[94silvermark]

My check engine light came on today. The codes i got are as follows 326, 327, 336 and 337. All egr pressure sensor voltage related either too high or too low. What gives i just replaced the dpfe about a month ago. Car runs fine aside from a rough idle because of a few dogged vacuum leaks. Around town mileage is around 16-17 on highway is 26-29.

 

[Frat-man-du]

seems like a vac leak has caught up to the EGR system. No way to know until you follow the tests associated with the codes...

 

[chris2523]

if you have vac leaks, you should fix them.

 

[94silvermark]

I wish i could fix the vacuum leaks. The intake may be warped i am on my 3rd set of fel-pro intake gaskets and it still leaks. I tightened the bolts again after running it in which helped but didn't fully stop the vacuum leaks. I ended up using the intake and imrc plates from my old engine with blown head gaskets so warping is sounding pretty reasonable.