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p0420...

Discussion in 'Stock 2006 -2010 Explorers' started by 06Mountaineer, July 3, 2013.

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    1. 06Mountaineer

      06Mountaineer New Member

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      2006 mercury mountaineer
      Have a 06 mountaineer, have a check engine light on for a P0420 catalyst, this usually a o2 sensor issue or an actual converter issue?
       
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    3. polizi212

      polizi212 Active Member

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      Check this link might answer your questions, The code P0420 in and of itself could be a few things and honestly a good scan tool that can read the O2 sensors and show whats going on will help the most.

      http://www.obd-codes.com/p0420
       

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