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Loud popping noise from under

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Sean I., Mar 20, 2022.

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  1. Sean I.

    Sean I. Junior Member

    Joined:
    Aug 5, 2019
    23
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    Location:
    Virginia
    Vehicle:
    2007 Prius
    Model:
    LE
    I have 2007 Prius with 120k miles.

    I started her up this morning with no problem, but as soon as the engine started running 5 seconds later, I started hearing very loud rapid popping noise from underneath. It sounded like it didn't come from tail end of the exhaust, but it was more from under the driver side. I turned her off and started again several times but the noise wouldn't go away. It just gets louder and louder until I turn it off.

    Before this happened, I had p2601 and p1116 that I haven't fixed for more than a year. I had replaced coolant pump 2 years ago to resolve p2601 but it failed again a year later, so I didn't bother.

    I checked the OBD again and now it also has p0446 (evaporative emission system, vent control circuit), on top of the other codes I have. Is this causing the loud noise?

    I can't find any thread that closely resembles this. Any ideas or suggestions will be greatly appreciated.
     
  2. SFO

    SFO Senior Member

    Joined:
    Feb 7, 2017
    5,297
    4,238
    0
    Location:
    Northern California
    Vehicle:
    2007 Prius
    Model:
    N/A
    Given the description, there is a chance that one of your illustrious neighbors has borrowed your catalytic convertor.
    Which obd2 scanner/app are you currently using for retrieval?
     
    bisco and jerrymildred like this.