ECM & Coolant Pump Error Codes - U0293, P261C

Discussion in 'Prius c Care, Maintenance and Troubleshooting' started by Prius C Lover, Oct 30, 2025 at 7:11 AM.

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  1. Prius C Lover

    Prius C Lover New Member

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    Location:
    Nashville,TN
    Vehicle:
    2012 Prius c
    Model:
    Two
    I have the following error codes: U0293, P261C

    I inspected the water pump and replaced it with a new OEM one but the error codes did not clear.
    All fuses are good but I am not positive about the more advanced relays and wiring.

    She’s got 200,000 + miles and I’d like to keep her going strong.

    Any help is appreciated.
    TIA,
     
    #1 Prius C Lover, Oct 30, 2025 at 7:11 AM
  2. Brian1954

    Brian1954 Senior Member

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    Model:
    III
    Which water pump did you replace? The engine water pump or inverter water pump?
     
    #2 Brian1954, Oct 30, 2025 at 5:40 PM
  3. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    Your post doesn't quite make it clear- did you clear the codes using your diagnostic tool?

    Just replacing a broken part does not clear the related code(s). You have to do that yourself.
     
    #3 Leadfoot J. McCoalroller, Oct 30, 2025 at 7:42 PM
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