Thread: P0420 Code
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Old 07-08-2007, 06:19 PM
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NissanTech NissanTech is offline
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2004 Xterra
 
Join Date: Jun 2005
Location: California
Age: 52
Posts: 12,536
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Thanks guys. With the car running so good would you think it mosy likely will be just needing to be reprogrammed by dealer or something else?
I would definitely start by reprogramming the ECM. There is a big chance that is the problem.
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