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po401

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    EML on, Error code PO401

    Hi All, My CLK270's EML light came on last night and is still on today, I plugged in my eBay special OBD reader and its thrown up a PO401 code which comea up as a EGR error - Insufficient Flow. What does that mean and how serious is it? I cleaned the EGR about 2 or 3 weeks ago and haven't...
    • Dom1988
    • Thread
    • code eml error po401
    • Replies: 0
    • Forum: Engine
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