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    skoda fabia 1.4mpi 2000year eng atz code p 0170 Archived Message

    Posted by keith brown on October 30, 2008, 10:16 am

    Head banger time!hope someone can stop me burning this car ,car runs fine ,code appears after long drive cycle,fuel trim malfuntion
    sure enough emmisions are
    co1.15
    co2 14.2
    hc145
    o2 0.0
    lamb .961 all readings identical during idle & at speed
    fuel press 3bar
    o2 sens is new
    inj duration 3.1ms at idle seems high!
    no air leaks at manifold
    check for cracks / leaks on exh before o2 sens
    this is ohv eng & does not have maf
    after reseting fuel trim levels & then 10mile drive, short term fuel trim is at2.3% at idle which would indicate vacum leak but no leak present!
    strange thing is the long term trim does not fluctuate at all even during or after drive cycle is that normal or do i have ecm fault
    any ideas to throw at me would be a help,spent too much time on this allready thanks.

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