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  1. 3.8L V6 "EGR Insufficient flow" P0401 fix (not the EGR valve)

    Chevy Impala 7th Gen Discussion
    Just wanted to post this in case others have the same problem I did with the 3800 V6 in Impalas and other GM vehicles. The EGR insufficient flow code P0401 can be a bit misleading, at least on the 3.8L. Just because "EGR" is in the title of the code, that shouldn't be the first thing to...