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p0411 air pump

  1. finding the source of my CEL code P0411

    2.0 Liter Gas
    So my check engine light came on while driving home Friday. Ran OBD scanner. Came up with code P0411 Secondary Air Injection System Incorrect Flow Detected. After spending a couple hours researching and watching videos on said system I was ready to start the process. Here's what I did on my 99...