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P1151

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Alex313, Mar 28, 2022.

  1. Alex313

    Alex313 New Member

    Joined:
    Mar 28, 2022
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    Location:
    Fayetteville,Nc
    Vehicle:
    2005 Prius
    Model:
    N/A
    I’ve replaced the coolant heat storage pump but the code comes back on after a day of clearing it . I tried bleeding the coolant system but it didn’t help . Should I replace the coolant tank ?
     
    #1 Alex313, Mar 28, 2022
  2. mr_guy_mann

    mr_guy_mann Senior Member

    Joined:
    Sep 3, 2020
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    Location:
    NJ-USA
    Vehicle:
    2006 Prius
    Model:
    Four
    Does the CHS pump work? Usually you can hear it run for a few seconds right after shutting the car off, and again after going to "ready" the next day (before the ICE starts).

    It would be helpful to have a working Techstream scantool. Then you could watch the engine and CHS temperature sensors during a cold start (the readings should go up when the system works correctly). You can also command the pump on and off.

    Posted via the PriusChat mobile app.
     
    #2 mr_guy_mann, Mar 30, 2022
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