1999 Toyota Camry p0420 cat problem?
Hey, i have a 1999 toyota camry LE v6 with california emissions. The p0420 code came up a couple months ago and i've been driving it fine. Gas mileage has been decent but i might be losing power. I replaced the o2 sensor on the cat 2 months before the light popped up. I want to change the cat soon, but i went on the kragen website and it shows that there's a front cat and a rear cat. How do i know which one is bad?
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