P0420 Nissan quest

Question

have a 2007 quest, with po420 code. is there a way to fix the prob without replacing the converter

Answer 1

if you have kept up with maintance, and always use 91 octane gas I would say it might be something else, if you use low octane fuel that is the #1 cause of the catalytic converter going bad or driving with other engine problems.

Nissan federal emission warranty is 96months or 80k miles if your are under the 80k miles they can replace the catalytic converter free