Catalytic Converter

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Olscratch, Sep 21, 2018.

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  1. Olscratch

    Olscratch Junior Member

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    That sounds like a hot tip. I'll try to find out where that area is.

    Is there any chance the oxygen sensor got damaged or contaminated and is causing this? I did not replace the one on the catalytic converter, the original o2 sensor is on.
     
    #21 Olscratch, Sep 27, 2018
  2. ETC(SS)

    ETC(SS) The OTHER One Percenter.....

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    #22 ETC(SS), Sep 27, 2018
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  3. NutzAboutBolts

    NutzAboutBolts Senior Member

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    No, if it was the 02 sensors, it would have a check engine light. The lights are all brake related components.
     
    #23 NutzAboutBolts, Sep 27, 2018
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  4. Olscratch

    Olscratch Junior Member

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    This is the Dealer Diagnostic page for what it was doing.
    [​IMG]

    They took a little while but figured out that it simply needed an (ECU?) "re-calibration" due to the converter welding. So that's fantastic news.

    For the first time in a year (p0420, p0300, p0303 | PriusChat) my Prius finally has no engine lights or other warning lights on. Its almost like new again.
    Now I just have to pin down why its throwing a little coolant into the engine compartment (replaced cap, no fix). But that's for another thread. Thanks to everyone who commented and helped me out with this situation.
     
    #24 Olscratch, Sep 28, 2018
    Last edited: Sep 28, 2018
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  5. Priusprofit

    Priusprofit Member

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    If you haven't sold the bad cats already I would buy them.
    I pay $250 for gen1, $300 for gen2 and $130 for gen3 catalytic converter sets. Must be OEM, can be in working or non working condition, it doesn't matter because I am scrapping.

    Posted via the PriusChat mobile app.
     
    #25 Priusprofit, Nov 3, 2018
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  6. capolihu

    capolihu Member

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    Not sure if it is my catalytic converter or not, but my gen3 has a pretty bad smell, especially if it is cold, but I noticed otherwise too. There is no check engine light. What could be it other than the cat if no error thrown? Or should I check with TechStream?
     
    #26 capolihu, Sep 4, 2019
  7. capolihu

    capolihu Member

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    Any advise here?
     
    #27 capolihu, Oct 29, 2019
  8. ETC(SS)

    ETC(SS) The OTHER One Percenter.....

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    Could be HVAC.
    You can vary the modes and see if things change.

    You're going to have to be more specific about the type of "pretty bad smell."
    This is especially if you live where it rains a lot, you have small children or pets, or you live next to a cat lady.

    Could also be acorns in your cabin air filter housing.
     
    #28 ETC(SS), Oct 29, 2019
  9. capolihu

    capolihu Member

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    Right. Bad smell I meant like not burned properly or burned oil. When you start the engine, some old engines give you that smell until it gets warm. But mine, even if it is running hot after 2 hrs drive, when I start the engine again, I have to stop the air-in in.
     
    #29 capolihu, Oct 29, 2019
  10. Robert Holt

    Robert Holt Senior Member

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    You might want to check for a valve cover leak that would drip onto hot engine components and produce such a smell. Maybe Remove the plastic shield underneath the engine compartment and carefully visually check for dirty tracks of oil leaking tgat would lead to anything hot?
     
    #30 Robert Holt, Nov 1, 2019
  11. tony_2018

    tony_2018 Member

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    Hey, old thread but I'm wondering how this has held up? I might need to get one as well. Or try cleaning it first since the old engine was probably burning oil and probably clogged up the cat
     
    #31 tony_2018, Jul 20, 2021
  12. Rmeade80

    Rmeade80 New Member

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    My car threw up the same code and I had to get the unit replaced, I got lucky I found a place that replaced it and put on a heat shield to prevent theft all for 700.
     
    #32 Rmeade80, Jul 21, 2021
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  13. douglasjre

    douglasjre Senior Member

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    What was the final on this one?
     
    #33 douglasjre, Dec 19, 2021
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