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MOT FAIL- high CO at natural idle

Discussion in 'A3/S3 Forum (8L Chassis)' started by abdus, Aug 13, 2008.

  1. abdus
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    abdus Top Gear VCDS Map User

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    [Aug 13, 2008]
    Got the car in for its MOT today. failed on Natural Idle Test

    Engine speed - 879rpm

    CO- 7.26% which is very high.

    It failed 1st time on the Fast Idle Test but on the 2nd test, it passed on the FIT

    what is wrong then? lambda sensor?

    How to check for lambda values on vagcom. When I go the block 032, it shows N/A on all the 4 sections.

    Any help appreciated. Thanks :)
    #1
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