Question about Chrysler Town & Country
P0420 is a code that suggests that the catalytic converter has gone bad. I couldn't tell by your post if you have replaced that or not but if you did and you used an aftermarket catalytic converter (one other than the dealer part) than that can be your problem. Aftermarket cats are not all the same or as good as the O.E. cats. Especially the universal fit type converters.
Posted on Oct 15, 2010
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Posted on Jan 02, 2017
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