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Old 03-20-2013, 04:48 AM   #1
en_focus
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rear o2 sensor

Does anybody know where the rear o2 sensor is located on a 2009 Ford Focus SE? I'm looking at building a custom exhaust and before I start cutting away I'd like to know where it is so I don't set of any engine codes and I do the set up correctly. Thanks!


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Old 03-20-2013, 05:40 AM   #2
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It shouldn't be any further past the back of your front fenders if that makes sense.
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Old 03-20-2013, 12:42 PM   #3
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Does anybody know where the rear o2 sensor is located on a 2009 Ford Focus SE? I'm looking at building a custom exhaust and before I start cutting away I'd like to know where it is so I don't set of any engine codes and I do the set up correctly. Thanks!
Its the last on in line, before your flex pipe. Add a header & a tune & that gets rid of it.
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