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Coolant Flow Control Valve Problem

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by mazenkordi, Jun 9, 2017.

  1. mazenkordi

    mazenkordi New Member

    Joined:
    Jun 9, 2017
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    Location:
    jordan
    Vehicle:
    2009 Prius
    Model:
    Two
    Toyota prius 2009 i have the code p1121
    i changed the coolant flow control valve twice and after reset the check engine light after one or tow days maximum i see again check engine light with the same code p1121 please help me. what is the problem?
     
    #1 mazenkordi, Jun 9, 2017
  2. Patrick Wong

    Patrick Wong DIY Enthusiast

    Joined:
    Mar 8, 2008
    18,199
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    Location:
    Green Valley, AZ
    Vehicle:
    2015 Prius
    Model:
    Two
    What process did you use to get air out of the engine coolant loop? It is likely that air remains in the system.

    How well does the cabin heater work?
     
    #2 Patrick Wong, Jun 11, 2017
    m.wynn likes this.
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