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p0420...

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Old 07-03-2013, 04:14 PM   #1
06Mountaineer
2006 mercury mountaineer
 
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p0420...

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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Old 07-03-2013, 11:41 PM   #2
polizi212
Northeast Ohio.
2008 Ford Explorer XLT
 
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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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