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MOT Failure one side

Just failed emissions on My TT SWB

 

The drivers side comes in well within tolerance but passenger side is all over the place

 

Did ecu diagnostic and O2 sensor seems fine

 

What else could it be?

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    • Featured Replies

    Just make sure they only test it on the drivers side then ;)

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    never had mine tested on both sides, usually get a choice which one to use.

    Any holes a goal :p

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    • Author

    They dont give you an option in Irish MOT

     

    And of course he picked the side thats failing

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    What part of the emissions did it fail on?

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    UK test you have to take an average of the 2

     

    did you actually test the O2 sensors are switching?

     

    what figures did you get?

    lambda reading??

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