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So ever since I purchased this car it has had random codes . The first series made no sense and saw a tsb bulletin for the errors. Fast forward installed a eventuri intake and was receiving the egr code but then this code 128401 o2 stuck rich . I got the egr code taken care of but still have this one left . I switched the o2 sensors around to make sure one was not faulty . No dice . I monitor the o2 reading in MHD and still everything looks normal . Car drives normal and no hiccups . The eventuri inlets are very loose with the gaskets in place so maybe I need new gaskets ?
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