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codes 2001 pathfinder

Posted: Sun Nov 11, 2012 7:45 am
by terry2001
i have a 2001 path finder.when i bought it three weeks ago ,the cat was bad drivers side.the car dealer replace the cat .i also have gotten a code that the 02 sensor was bad and that no1 coil is bad .i replaced those.now i get a code 420 and 430 .what else should i look at?is there a code reader that will give me more info than just these codes?