The one key I believe that everybody is missing is that piston #1 must be at top dead center in order to blow out the carbon between the TB and the EGR valve. I tried it originally, still had the code. I put the engine at TDC, blew in TB cleaner, then blew it out with compressed air through the EGR side of the manifold. All of the gunk will come out, and keep repeating until the cleaner comes out relatively clean on the TB side. This is what I did to get rid of the code, however, I may be full of myself.
