After resetting the codes and driving 50+ miles on surface streets, the scanner still showed the CAT and EGR as INC. Drove on the freeway and after 20+/- miles the CEL went on and it was the P0401 that came back. Unfortunately the smog check in CA allows only one INC. Will have to invest a...
Can someone help me identify what part is #5 in the first picture of the intake manifold. I noticed that mine is broken and was wondering if it is causing the P0401. Thanks.