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po401

  1. Error PO401

    Alfa 147, 156 & GT
    Hello Sorry to bring up an already covered problem, however after searching, I can't find an answer to my question. My partner has a 2003 156 140bhp JTD and it had the MCSF error. When I checked the code with my odb reader it was error PO401. As I have a 2007 150bhp GT, I tried putting my EGR...
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