I couldn't see anything for it when the car was up on the lift last night. Still stumped. Any suggestions? I'm getting a p0300 and a p0174 by the way as well. Planning on doing the Intake Manifold tomorrow as I saw a nice leak right up under the EGR tube connection to the back of the intake. Hopefully that fixes my p0174. It's definitely not leaking from the exhaust manifold.