Thread: P0420 Cat efficiency
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Old 05-10-2013, 04:23 PM
jimbob0077 jimbob0077 is offline
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Re: P0420 Cat efficiency
You did a great job analyzing this problem. However sometimes it’s just cost effective, to take it to someone that has the $10K scan tool that can graph the O2 sensors, and tell you which part to spend the money on.
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