HELP obd2 code p0420 catalytic effeciency
12-06-2004, 09:00 PM
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HELP obd2 code p0420 catalytic effeciency
this keeps popping up on my girls 98 civic dx. it only has 54k on it. dont really know what it could bem i just put a new front o2 sensor in it so i dont know what is wrong with it, want to make sure my cat is actually bad before i pay 200+ for the gay manifold+cat design that here car has
any help is much appreciated
thanks
any help is much appreciated
thanks
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