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Thread: critical system malfunction 2

  
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    skinnedknuckles's Avatar
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    critical system malfunction 2

    I am getting the fault code P0400 followed by the alarming message critical system malfunction2 (refer to checking proceedure:trouble code description present. the vehicle is a 2000 1.7dti (isuzu engine). engine management light only comes on after run of about an hour when the car begins to splutter and lurch at speeds over 60 or under load over 3000rpm. Anyone know what said checking proceedure refers to.Cheers

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    itzjoolz's Avatar
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    Ive got the same problem astra 2000 1.7 td. Been running like this for a while now.
    Only does it now and again???????

    Have you fixed it yet?

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    Air leak or air mass metre

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    turbo will's Avatar
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    check all the vac pipes and rubber connectors

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    Spedo's Avatar
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    You may be pulling in air into the fuel, check the fuel forward and return pipes to the filter housing for tightness and the lid is on flush and not overtightened (6nm). I take it for granted the fuel filter has been changed recently. If everything checks out you may need to replace a the AFM but before you do this make sure the wireing is secure.

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    paul gsi's Avatar
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    i have the exact same problem with my van and it is wrecking my head iv changed afm but made no difference , can you post up wat it is if you fix it and i will do likewise

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