Re: Help: P0420 code
Great news. I hope it stays that way. These vehicles can be fussy about the type of cat. I've seen some posts about DTC codes reappearing after a few months when using an after market cat. Thats why alot of folks pay for the OEM cat from the dealer. On my 2001 Sequoia we initially installed an aftermarket cat and the code returned after a few weeks. We replaced it with a california cat. No codes yet after 3k miles and about 3 months. Did you use the Walker or the Eastern cat from Rock Auto?
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