NO AC ONLY CODE B1421/B1271

Discussion in 'Gen 2 Prius Technical Discussion' started by JIM777, Aug 24, 2018.

  1. JIM777

    JIM777 Member

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    05 PRIUS 194000
    NO AC ONLY CODE B1421/B1271
    TRIED TO RUN COMPRESSOR WITH ACTIVE TEST ON TECHSTREAM WOULD NOT RUN. AFTER RESETTING THE CODES. B1421 WAS THE ONLY ONE THAT STAYED. THOUGHT I FIND SOME OTHER CODES BEING THE COMPRESSOR IS NOT RUNNING. ATTACHED IS OTHER DATA INFORMATION ANY HELP WILL BE GREATLY APPRECIATED THANKS.
     

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  2. Raytheeagle

    Raytheeagle Senior Member

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    B1421 is the solar sensor. Just means the car didn’t detect sunlight;).

    The screen shot shows 2 trouble codes there to be read. Was the picture taken before or after the reset?

    B1271 is for the combo meter I believe.

    Good luck and keep us posted (y).
     
  3. JIM777

    JIM777 Member

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    Picture was taken before reset.
     
  4. JIM777

    JIM777 Member

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    Is it possible for the AC not to work and it not throw any codes or am I. Thought it would throw like an open circuit or fault code for compressor? When textreme tells the compressor to run should I hear a relay clicking when it sends the 220 volt to the compressor?
     
  5. Raytheeagle

    Raytheeagle Senior Member

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    I think there are enough sensors in the system that if the temperature expected doesn’t match what is being output, you’d get something that tells you that.
     
  6. JIM777

    JIM777 Member

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    Yes I agree that what makes me think ECU not working and not sending any codes?
     
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  7. JIM777

    JIM777 Member

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  8. JIM777

    JIM777 Member

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    Not sure how to tell or even where it's located. Thinking about pulling one out of my donor car and trying it. But not sure where it's located.