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I had to replace the catalytic. The repair facility said it is a common problem. Thanks for the help!

Thanks!! I understand clearing the code will not resolve the issue. I would think that after running the vehicle through the readiness profile, either the check engine light would come back on for the same error code. I will have to take it in to have the sensors and catalytic checked. Thanks!

I have a 2006 4.6L Explorer. My check engine light came on. I purchased a OBD reader and found that the code was a P0420. I reset the code. I read in the owners manual to see how to get the vehicle emissions ready for emissions testing. I ran the engine through the profile but the OBD still...