My sister-in-law's 2001 Altima has the P0420 code, and from what I have read it's going to require a catalytic converter. Where can I find the proper cat, and is it a do it yourself job?
my 99 altima check engine light came on this week,got same code,i had autozone reset light,never came on again,would not rush to buy catalytic converter till you its actually bad
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