engine code P420
#1
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engine code P420
anyone gotten this code before? i got a 98 civic EX with only 60,000 miles. i have already replace upper and lower o2 sensor.it gone away for a few months but is back again,so whats next the cat? and if so,what is the most common problem that would kill the cat?
thanks
thanks
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Re: (LVB18Civic)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LVB18Civic »</TD></TR><TR><TD CLASS="quote">We see this all the time at work. That codes means that the cat. is no longer efficent. You need to replace your cat. then clear the code.</TD></TR></TABLE>
second this
second this
#7
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Re: (LVB18Civic)
i third this same thing happen to my friend and we put a carsound cat on and it went away after we cleared the code
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