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P0420, P0430 Codes

Messages
58
Reactions
21
Points
7
Location
New Hampshire
Vehicle
2021 Explorer ST
#1
So my CEL just popped, ran the scan and its coming up with the codes above, did some quick research and coming back with possible cat issues I have CV high flow cats installed with the defoulers. I installed them months ago and did not get any codes so I'm assuming bad 02s? I haven't had it in the air yet to see if they are cracked (I know some CVs were made defective) just thought id post to see if anyone had any similar issues or anything to point me in the right direction. Hoping its just the 02s, I'm going to bring it to my garage to have them take a look as well.

Side note I did just replace the purge valve last weekend but I doubt that has anything to do with it.
 



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