I have an ongoing po420 engine code on my 2002 nissan frontier(2.4). i Nissan pathfinder code p0430 p0420 fixed solved no sensor or catalytic Code po420
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I will help you with your po420 code. been there done that.
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Nissan code altima po420 sensor frontier 2002 engine spacer like rear ongoing justanswer spacers cyl 5l automatic shops performance looksI have had a po420 code for a couple months. it is a 2009 nissan 2.5s P0420 code. how to fix it. don't spent spend tons of $$$.Nissan po420 altima.

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