Cel Code 71 Egr System Malfunction

[jsi4u2nv]

I keep getting this error code 71. I've already removed the EGR, cleaned it out, vacum tested it, everything looks good. I replaced it, cleared the code, but the code keeps coming back. I've double checked the vaccum lines, everything seems fine. Car runs perfectly, idles perfect, accelerates great, no overheating... cant figure this one out. Anyone have experience with this problem? :cries:

[jzz30]

maybe there is a leak in the metal pipe from the exhaust?