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Re: 1999 Safari Van - code P0420
Thank you for your reply and your expertise. I do not have a proper scan tool only a code reader that can clear codes. I have to take it into a qualified garage. One of the oxygen sensors were replaced 91,000 miles ago and the catalytic converter was changed 87,000 miles ago. The van has 313,000 miles on it. Once I have the problem solved I will post the results. Sorry for the delay in my response. Does anyone know how many O2 sensors are on this particular vehicle? Thanks again.
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