Rough idle

Discussion in 'Generation 1 Prius Discussion' started by bigblock67, Oct 24, 2020.

  1. bigblock67

    bigblock67 433K with new cells

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    02 has rough idle and no radiator fan when AC is on. Which relay is for fans. Code 117? Thanks
     
    #1 bigblock67, Oct 24, 2020
  2. Trombone

    Trombone Member

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    Code 117 means HV ECU back-up power source circuit malfunction. It is a sub-code of DTC P1600, BATT Malfunction, one of the Hybrid Vehicle ECU Diagnostic Trouble Codes. As for the relays, see the Owner's Manual, and also look inside the covers of the relay boxes under the hood, where they are identified by location in the relay boxes.
     
    #2 Trombone, Oct 24, 2020
  3. bigblock67

    bigblock67 433K with new cells

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    Is there a video on Gen1 temperature sensor unit R&R?
    Thanks
     
    #3 bigblock67, Oct 26, 2020
  4. Trombone

    Trombone Member

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    Google "2002 prius temperature sensor unit" and you'll get a few hits!
     
    #4 Trombone, Oct 26, 2020
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