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2008 Prius Code P1121

Discussion in 'Gen 2 Prius Main Forum' started by yisiling, Jul 26, 2022.

  1. yisiling

    yisiling New Member

    Joined:
    Jul 26, 2022
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    Location:
    Los Angeles
    Vehicle:
    2008 Prius
    Model:
    Touring
    Hi! First time poster here. I have a 2008 Toyota Prius with around 111500 miles. The check engine light is on and the code is P1121. Anyone here have an idea how much does it take to get it fixed? I live at LA, can you also recommend a reliable shop for me to take it there? Not a DIYer, that option is out.

    Thanks in advance!
     
    #1 yisiling, Jul 26, 2022
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  2. mr_guy_mann

    mr_guy_mann Senior Member

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    Vehicle:
    2006 Prius
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    Four
    That code on a Gen2 Prius (2004-2009) is almost always a failed coolant control valve (aka 3-way valve). This valve directs hot coolant into a thermos tank to speed engine warmup on a cold start. It's helps reduce emissions and has no effect on how the car drives.

    I always recommend using a Toyota part (more reliable). Expect $100-150 for the part, about 2 hours of labor, plus some coolant.

    Posted via the PriusChat mobile app.
     
    #2 mr_guy_mann, Jul 27, 2022
  3. yisiling

    yisiling New Member

    Joined:
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    Location:
    Los Angeles
    Vehicle:
    2008 Prius
    Model:
    Touring
    Thanks! That's super helpful!!
     
    #3 yisiling, Jul 27, 2022
  4. bisco

    bisco cookie crumbler

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    boston
    Vehicle:
    2012 Prius Plug-in
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    Plug-in Base
    welcome!
    hybrid pit comes highly recommended
     
    #4 bisco, Jul 27, 2022
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