p1123 replaced both pumps now no heat

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Jmack111, Nov 10, 2019.

  1. Jmack111

    Jmack111 Member

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    2004 Prius
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    heat work before replacing pump.
    replaced switching pump worked fine about a month then heat stopped working car run fine but p1123 error code replaced both pump and blow air down core check for plug air came out chrome cap hole on both line going from the line on the cooling pump/ swich
    fist time I drain it every reservoir drained
    now just chrome
    gen 2 250,000
    I use the long fullel and bleeder on radiator to get the air out and drained at the tank any ideas


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    #1 Jmack111, Nov 10, 2019
  2. bisco

    bisco cookie crumbler

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    sounds like air
     
    #2 bisco, Nov 10, 2019
  3. dolj

    dolj Senior Member

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    Have you switched the heater to HIGH and run the car at 2,000 RPM for 15-20 min? If not, do this and report back. (Search for "Inspection Mode" to keep the ICE running continuously.)
     
    #3 dolj, Nov 10, 2019
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