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    Renault Laguna 1.9 DCI 2003 Archived Message

    Posted by Colin Hedger on July 14, 2008, 10:56 pm

    Hi lads,
    Customer brought this in with irritating voice message saying "fuel injection fault-take to dealer".
    Launch showed 2 codes:
    DF019 Air flow sensor memory circuit,incoherance of data.(memory)
    DF074 Boost pressure sensor,Coherance between the boost pressure and atmospheric pressure. (memory)
    No apparent running probs but had a new turbo 6000m ago and broken wiring at pressure reg was also fixed 1500m ago.
    Codes clear but return a while later with irritating voice. Codes usually say 'memory'.
    My first thoughts were loose or split pipe work,but checked (without removing),found nothing.
    Eventually found air leak round loosely fitting boost pressure sensor.New sensor cured the leak and the fault (or so i thought!).3 weeks later car back,same fault,same codes(memory).Since tried new Air mass meter-no different.
    Any help please? Should I look again at the pipework?
    Thanks
    Colin.

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