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Code P0430

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Danygts, Mar 14, 2023.

  1. Mar 14, 2023 at 7:14 PM
    #1
    Danygts

    #1
    Danygts [OP] Active Member

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    My 2005 Toyota Tacoma TRD SR5, V6, code P0430. My Tacoma works very good. Do I have to change the AF sensor and the O2 sensor? What can I do to fix it?
     
    Danygts, Mar 14, 2023
    #1
  2. Mar 14, 2023 at 7:18 PM
    #2
    HondaGM

    #2
    HondaGM Call sign Monke

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    More than likely you need a catalyst…
     
    HondaGM, Mar 14, 2023
    #2
    Dm93 likes this.
  3. Mar 14, 2023 at 7:26 PM
    #3
    Bishop84

    #3
    Bishop84 Well-Known Member

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    Check for exhaust leaks first, don't throw sensors at it.

    P0430 means the sensors are working. The cat is not. Get it properly graphed before spending the big money on a cat.
     
    Bishop84, Mar 14, 2023
    #3
    HondaGM and TnShooter like this.
  4. Mar 14, 2023 at 7:27 PM
    #4
    Danygts

    #4
    Danygts [OP] Active Member

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    What catalyst? How much $ it cost?
     
    Danygts, Mar 14, 2023
    #4
  5. Mar 14, 2023 at 7:30 PM
    #5
    HondaGM

    #5
    HondaGM Call sign Monke

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    HondaGM, Mar 14, 2023
    #5
  6. Mar 14, 2023 at 7:30 PM
    #6
    Danygts

    #6
    Danygts [OP] Active Member

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    Ive used 3 Cataclean bottles, it makes the code change from P0420 to P0430.
     
    Danygts, Mar 14, 2023
    #6
    HondaGM likes this.
  7. Mar 14, 2023 at 7:31 PM
    #7
    HondaGM

    #7
    HondaGM Call sign Monke

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    You may need both cats …
     
    HondaGM, Mar 14, 2023
    #7
  8. Mar 14, 2023 at 7:36 PM
    #8
    Steves104x4

    #8
    Steves104x4 Well-Known Member

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    BUCKLE UP! It makes it harder for Aliens to pull you out of your Truck.
    How old are the spark plugs and how many miles on the truck?
     
    Steves104x4, Mar 14, 2023
    #8
    HondaGM likes this.
  9. Mar 14, 2023 at 7:37 PM
    #9
    Danygts

    #9
    Danygts [OP] Active Member

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    The spark plugs are about a 1 year old. 214,000 miles.
     
    Danygts, Mar 14, 2023
    #9
  10. Mar 14, 2023 at 7:40 PM
    #10
    Steves104x4

    #10
    Steves104x4 Well-Known Member

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    BUCKLE UP! It makes it harder for Aliens to pull you out of your Truck.
    I’d start by replacing all the dry rotted vacuum lines. Then (and @LeakyAC is gonna love this) I’d buy new ignition coils but that’s just me. Good luck!
     
    Steves104x4, Mar 14, 2023
    #10
  11. Mar 14, 2023 at 8:33 PM
    #11
    Danygts

    #11
    Danygts [OP] Active Member

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    Can I use an aftermarket catalytic, not OEM without the check engine light on?
     
    Danygts, Mar 14, 2023
    #11

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