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p0170, fuel trim system lean. please help a danish man

Discussion in 'Astra, Corsa, Zafira, Meriva, Adam, Agila, Tigra & Nova [Includes AstraVan & ComboVan] owners forum' started by harald, Dec 11, 2013.

  1. harald

    harald New Member

    Messages:
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    Location:
    Copenhagen, Denmark
    Drives:
    opel astra 2004 twinport 1.6 z16xep
    Hello from Denmark, friends, I hope that there are any who can help me with a problem I have a fault reader to the computer, which can also record live data that I can see that many also make use of this forum.

    These are the errors: p0170 - (2) Fuel Trim System Lean.

    People in Denmark, do not have much sense of Opel, as in England, which runs more in Opel / VAUXHALL.

    I have changed my lambdasensor bank1sensor1 / oxygen sensor with an original part, but it was no problem, now it says on some pages that maf sensor may be damaged, there is a kind soul who can help me to read about my livedat have correct values? possible. looking at other data that can be the reason?
    IMPORTANT! The error only happens when I drive on the highway!
    I put an excel doc. on this page, which you can download from.

    pastelink.me/dl/3932ff#sthash.mv5kbGxA.dpuf , normal excel reader from microsoft, shows the files wrong, so I usually use an online excel reader that works better.

    really hope you can help me.
    the error is driving me crazy
    Sincerely Harald Opel Astra G 1,6 twinport ( 2004 ) the motortype is z16xep

    Attached Files:

  2. harald

    harald New Member

    Messages:
    4
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    Location:
    Copenhagen, Denmark
    Drives:
    opel astra 2004 twinport 1.6 z16xep
  3. marks152

    marks152 Well-Known Member

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    Location:
    liverpool, uk
    Are you sure you dont have a leak in the exhaust system between the engine and the rear lambda/o2 sensor
  4. vexorg

    vexorg Active Member

    Messages:
    386
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    27
    Location:
    Scotland
    Drives:
    Calibra turbo
    Usually that type of fault is related to the lambda, the ecu can't adjust far enough to keep the afr correct. Try disconnecting the battery for 15 minutes, then take the car out for a good run, a mix of slower and faster driving.
  5. harald

    harald New Member

    Messages:
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    Location:
    Copenhagen, Denmark
    Drives:
    opel astra 2004 twinport 1.6 z16xep
    I do not think I can hear or see leaks, but a very small hole is also well enough that it fails perhaps? But I'm not sure, maybe it's something psychological, but I do like the car previously made a crisp good sound when accelerated, but the last 5-6 months, I seem to like to hear a valve ticking sound when I accelerate, the car is veholdt engine has clocked 130,000 km, all servicing things are changed and the correct oil is used, and so this can sound of ticking indicate leakage of sound and air exhaust? have namely had a fiat punto, even where the gasket between the exhaust manifold and the engine was damaged, then you could hear it as a kind of valve sound ...
  6. harald

    harald New Member

    Messages:
    4
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    Location:
    Copenhagen, Denmark
    Drives:
    opel astra 2004 twinport 1.6 z16xep
    vexorg : I have tried it, but not helped.

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