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P0137 3 years after cat was stollen and o2 replaced

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Bryanesk, Jul 13, 2024 at 5:54 PM.

  1. Bryanesk

    Bryanesk Junior Member

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    Hi so I’ve been getting a P0137 code bank 1 sensor 2. Looking at a denso at auzo zone but been seeing threads that other things could also cause this code any ideas what I could do to trouble shoot this?
     
    #1 Bryanesk, Jul 13, 2024 at 5:54 PM
  2. Tombukt2

    Tombukt2 Senior Member

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    Look at the freeze frame data from something like an AP200 scan tool so you can see the numbers that the sensor is producing when it's working.
     
    #2 Tombukt2, Jul 13, 2024 at 6:10 PM
  3. Bryanesk

    Bryanesk Junior Member

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    is a Bluetooth obd2 and a car scanner app sufficient?
     
    #3 Bryanesk, Jul 13, 2024 at 6:11 PM
  4. Tombukt2

    Tombukt2 Senior Member

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    If the app and the thing you're using plugged into your OBD2 port is called bidirectional it has the capability whether the software you're using on your phone has the capability to interpret freeze frame data I have no idea like if you're using the carista app I believe you are good to go but if you are your payong a subscription fee.
     
    #4 Tombukt2, Jul 13, 2024 at 6:24 PM
  5. BiomedO1

    BiomedO1 Senior Member

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    How much oil is the car burning between oil changes and at what intervals.
     
    #5 BiomedO1, Jul 13, 2024 at 8:35 PM
  6. Bryanesk

    Bryanesk Junior Member

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    Unsure i noticed one time when I was doing a change it was near or below the first hole on the dipstick
     
    #6 Bryanesk, Jul 13, 2024 at 9:13 PM
  7. BiomedO1

    BiomedO1 Senior Member

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    That's around a quart of oil every 5K or 10K oil change interval?

    The reason I'm asking is that you can oil foul the CAT if your oil burn is excessive. That would lead to a down-stream sensor issue.
     
    #7 BiomedO1, Jul 14, 2024 at 11:32 AM
  8. Bryanesk

    Bryanesk Junior Member

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    Would that mean I would need to replace the cat?
     
    #8 Bryanesk, Jul 14, 2024 at 11:47 AM
  9. Bryanesk

    Bryanesk Junior Member

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    Honestly unsure but Ik that by the time I check the oil at like 5k it’s pretty low
     
    #9 Bryanesk, Jul 14, 2024 at 11:54 AM
  10. BiomedO1

    BiomedO1 Senior Member

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    You need to first determine if it's a sensor issue or a CAT issue. There are chemical treatments to try to fix an oil fouled CAT, because the replacement alternative is very expensive here in Ca.

    If you try any of those Youtube tricks to fool your sensor, that's an automatic FAIL at the smog station. Just saying....

    Hope this helps....
     
    #10 BiomedO1, Jul 14, 2024 at 12:19 PM
  11. Bryanesk

    Bryanesk Junior Member

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    What treatment would be good?
     
    #11 Bryanesk, Jul 14, 2024 at 12:20 PM
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