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M O T Fail on emissions

Discussion in 'A3/S3 Forum (8L Chassis)' started by weelo, Jul 16, 2012.

  1. weelo
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    weelo New Member

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    [Jul 16, 2012]
    Had the test done today lol.. Failed on emissions.. Was thinking it lambda sensor ! Or could it be the cat? Is it easy enough to fit???? A3 18t (AGU)
    Last edited by a moderator: Jul 16, 2012
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  3. beachbuggy
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    beachbuggy Well-Known Member

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    [Jul 16, 2012]
    what did it fail on? O2 is cat..... Lambda readings will be the sensor, Hydrocarbons could be pistonring or the like
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