Having problems with your 1997 Chrysler Town & Country ?
Chrysler town and country catalyst system efficiency below threshold code 420 what is the issues
There are too many things to check,that could cause that code. The veh is old enough to have a worn out converter, but I wouldn't jump to that conclusion just based on age. Other issues may have ruined it. Your best bet is a dealer or a really good repair shop. There is a lot to test and check,so expect to spend some money. At least a couple hours diagnostic time,before they throw parts at it.
It is a simple issue here, the catalytic converter is worn out that is the only thing this code indicates.
Repair Help & Product Troubleshooting for 1997 Chrysler Town & Country
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