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Heater not blowing hot enough

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Jama707, Jan 19, 2024.

  1. Jama707

    Jama707 Junior Member

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    2011 Prius
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    Base
    even though I replaced the three-way valve recently I think it could be the problem - i've this kind of whirrring noise from the pump area

    07 Prius noise - YouTube
     
  2. Jama707

    Jama707 Junior Member

    Joined:
    Dec 26, 2018
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    Location:
    SACRAMENTO, CA
    Vehicle:
    2011 Prius
    Model:
    Base
    I'll get a new one and see if changes, usually it usually throws P1121 but i don't have it
     
    Tombukt2 likes this.
  3. dolj

    dolj Senior Member

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    Maybe if you got a cheap knock-off or caounterfeit unit from Amazon or eBay but it might not necessarily be the valve itself. It could be a wiring issue or a connector issue. Proper diagnosis will sort out where the problem is.