2003 nissan xterra po420 code bank1 i replace both o2s and the manifold
and upper convertor still have po420 code

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Bass_n_around
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Hal - 29 Nov 2006 15:35 GMT
> 2003 nissan xterra po420 code bank1 i replace both o2s and the manifold
> and upper convertor still have po420 code
Did you pull the battery cables to reset the computer?
Chris