Catalytic converter replaced at ~8300 miles

Discussion in 'Issues, Repairs, Warranty, TSB, Recalls' started by shravanj, Jun 4, 2019.

  1. shravanj

    shravanj Member

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    I was driving to work on Monday when the CEL came on soon after I exited the highway. Took it to AutoZone to have the codes pulled and it showed P0430 Catalytic Converter efficiency below threshold for bank 2. I initially thought it was a bad O2 sensor and took it into a Ford dealer for further diagnosis. I got a call back today stating the cat had actually failed and needed to be replaced, under warranty of course. I was still shocked to see the OEM cat fail at just around 8300 miles on the car. Has this happened to anyone else?
     
  2. 91gt331sc

    91gt331sc Member

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    I have a 2019 gt with 2900 miles and got the same code. I went with catted longtubes instead. I did return the old driver side cat for a new replacement. My brother is a service manager at a Ford dealer and said he has replaced another one on a mustang and a few on f-150's
     
  3. OP
    OP
    shravanj

    shravanj Member

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    Good to know I'm not the only one. Still strange that a cat could go bad so quickly though.
     
  4. Cobra Jet

    Cobra Jet Well-Known Member

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    Just curious, how are they failing?

    Meaning, is the catalytic honey comb breaking apart, or is it melting?
     
  5. Zinc03svt

    Zinc03svt Well-Known Member

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    Maybe the supercharger on your car OP?
     
  6. OP
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    shravanj

    shravanj Member

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    Not sure, I’ll ask the dealer what happened when I pick up the car.
     
  7. OP
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    shravanj

    shravanj Member

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    Its possible it’s tune related, but I’m still running the latest Roush tune which has a CARB E.O so I’d think it would be friendly towards the factory cats.
     
  8. Zinc03svt

    Zinc03svt Well-Known Member

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    It is not uncommon for aftermarket supercharger to toast a cat regardless of tuning. Especially if temps outside are up and your running the car fairly hard. If I am not mistaken the Roush has an undersized heat exchanger/intercooler which will add to the heat issue.
     
  9. OP
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    shravanj

    shravanj Member

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    Makes sense. I haven’t driven the car particularly hard recently but maybe it was residual damage that led up to the cat failing. Hopefully the dealer knows why it failed. Thanks for the insight though.
     
  10. Jetnoise

    Jetnoise Well-Known Member

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    Anyone's cat smell like sulphure ?
     
  11. 2017GBGTPP

    2017GBGTPP Well-Known Member

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    Maybe it needs a bath?
    But seriously, that just means you're driving it right.
     
  12. Kong76

    Kong76 Well-Known Member

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    Only when I haul ass. Also depends on which gas station I go to. Smells pretty strong in the trunk. No cells so f it.
     
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