Got some codes

Discussion in 'Gen 3 Prius Technical Discussion' started by douglasjre, Jul 17, 2023.

  1. douglasjre

    douglasjre Senior Member

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    Car was sitting in park with the AC on lowest temp highest fan speed recirculate 95° f Day full tank of gas didn't have any codes was running just fine. I noticed the car was off engine off warning lights on dash as shown in these codes came out. Car wouldn't move. I had to power it done cycle power back on and it would move slowly and then it would safety itself off again. Had to do that a few times to get it to move into a parking spot. After I got flatbed home I was able to drive it up to hell into the driveway. I have cleared the codes I have checked the thermostat and the water pump using techstream. The cooling fan works using text stream the water pump works using text stream The thermostat works correctly in a pot of boiling water. Antifreeze was full. No recurrence of the problem since checking everything. I even pulled the water pump off and checked that the fan spins the impeller which it does. Any ideas why? Seems like p0a08 popped up 3 hours prior to pulling codes which would make it the primary code. Or would the overheat code be the primary code and it's historic but not current making it the primary problem or contributory problem? If you look at the hysteresis you'll notice that that circuit was 230 Fahrenheit. Seems like there were two problems at the same time which doesn't really make sense. Integers the car 100 miles since clearing codes and it's running fine. Yes it has the original inverter. But when inverters pop they don't suddenly work again so I'm a little dumbfounded on this one
     

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  2. Tombukt2

    Tombukt2 Senior Member

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    That's pretty cool You've got almost all the same codes I had just day before yesterday with the engine running like the starter motor is still engaged when it shouldn't be That's what it sounds like if it was a regular car with the Bendix stuck It's like my electric motor is spinning the engine after the engine is already running or something like that all the noise is right over the transaxle engines running smooth and I had almost these exact codes now I have no codes I had no overheating in the mix in TIS there was no overeating.
     
  3. Mendel Leisk

    Mendel Leisk Senior Member

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    With both participants apparently voice-dictating this should be interesting. :)
     
    douglasjre, Mr. F and bisco like this.
  4. bisco

    bisco cookie crumbler

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    my eyes go fuzzy, but i'm old
     
  5. ChapmanF

    ChapmanF Senior Member

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    It's not your eyes.
     
  6. douglasjre

    douglasjre Senior Member

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    Any thoughts about what could be wrong?
     
  7. vvillovv

    vvillovv Senior Member

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    Are you planning to try to reproduce the issue?
    Sounds to me like you just over stressed the cars capabilities to cool it's self off and a chain reaction resulted in one system borking the next until the ECU just gave up and locked out hard.
    Idling for however long it took with A/C on full at 95 F - the fans must have been screaming by the time the car shutdown.