Help: P0420 code - Page 2

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Thread: Help: P0420 code

  1. #16
    Ray
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    Default Re: Help: P0420 code

    Update: So far so good at 250 miles, no code pop out.

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  3. #17
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    Default 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?

  4. #18
    Ray
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    Default Re: Help: P0420 code

    I'm using the Eastern cat from Rock Auto.

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    Default Re: Help: P0420 code

    Just through that code. Cleared it to see if it comes back. How hard are the sensors to replace? Any pics for diy. I'll start there if the code comes back. Does that sound good?

  6. #20
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    Default Re: Help: P0420 code

    I jet cleared that. Ode to see if it pops up again. I'll start with sensors first if it pops up. Andy pics for diy? Does that sound like a good plan?

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    Default Re: Help: P0420 code

    So the code returned. The shop that the truck is at is saying P0420 is on the passenger side. Is that right?

  8. #22
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    Default Re: Help: P0420 code

    i changed mine only to still have the code still remain my next step is the manifold i will be going to headers.

  9. #23
    Ray
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    Default Re: Help: P0420 code

    P0420 is driver side.

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