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P0A93 +C1300+ Combo meter failure warranty expired 2 months

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Brandonholohibrido, May 10, 2016.

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  1. Brandonholohibrido

    Brandonholohibrido Junior Member

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    I just rechecked the coolant tank, and I saw some swirls and bubbles, when I opened the bleeder, and turn the car into ready mode, that means that the water pumps is working still right? I set the bleeder tube on the bleeder, and coolant was coming out, I am not sure if that is because the pressure, or because the pump?
     
    #21 Brandonholohibrido, May 20, 2016
  2. bisco

    bisco cookie crumbler

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    yes, working.
     
    #22 bisco, May 20, 2016
  3. Brandonholohibrido

    Brandonholohibrido Junior Member

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    But only after I turn it into ready mode, and open the bleeder valve, I dont see that when it's on ign on
     
    #23 Brandonholohibrido, May 20, 2016
  4. bisco

    bisco cookie crumbler

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    okay, not sure if you should see it in ig on or not, but you def shouldn't need to open a bleeder valve.
     
    #24 bisco, May 20, 2016
  5. dolj

    dolj Senior Member

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    I have verified just to confirm what I thought.

    It is NOT necessary to open the air bleed valve to see the inverter coolant movement.

    You shouldn't see bubbles or vigorous agitation, just a steady and definite stream front to back. Unscrew the Inverter Coolant reservoir tank lid, take it off and shine a touch down the opening or through the side to aid visibility.

    In ACC mode, the inverter is off, so no coolant movement is (or should) be seen in the inverter coolant reservoir.
    In IG-ON mode, the inverter is ON, so coolant movement should be seen in the inverter coolant reservoir.
    In READY, the inverter is ON, so coolant movement should be seen in the inverter coolant reservoir.

    With the car OFF, the modes are:
    • ACC mode = foot OFF the brake pedal, press power switch once.
    • IG-ON mode = foot OFF the brake pedal, press power switch twice.
    • READY = foot ON the brake pedal, press power switch once.
    Notes:
    1. With car in ANY mode, foot ON the brake pedal, press power switch once will make the car READY.
    2. With the car in ACC mode, foot OFF the brake pedal, press power switch once, makes the car in IG-ON.
    3. With the car in IG-ON mode, foot OFF the brake pedal, press power switch once, turns the car OFF.
    I have attached a picture of the inverter coolant tank, just to remove all doubt.

    Prius Gen II Inverter Reservoir.jpg
     
    #25 dolj, May 20, 2016
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  6. Brandonholohibrido

    Brandonholohibrido Junior Member

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    Yeah earlier, I turn on the car and I saw swirls and bubbles, I am going to see if I still have those codes, later and I hope mpg goes up. The engine had alot of sand because I went to galvesto a week ago, but just for 4 hours, I had to replace the air filter.
     
    #26 Brandonholohibrido, May 21, 2016
  7. bisco

    bisco cookie crumbler

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    is it sandy in galvesto?
     
    #27 bisco, May 21, 2016
  8. Brandonholohibrido

    Brandonholohibrido Junior Member

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    its a beach
     
    #28 Brandonholohibrido, May 21, 2016
  9. bisco

    bisco cookie crumbler

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    wow, you went four wheeling on the sand?
     
    #29 bisco, May 21, 2016
  10. Brandonholohibrido

    Brandonholohibrido Junior Member

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    not really, I parked on the street,
    I never drove on sand.
     
    #30 Brandonholohibrido, May 21, 2016
  11. bisco

    bisco cookie crumbler

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    wow, it just blows into the air cleaner?
     
    #31 bisco, May 21, 2016
  12. Brandonholohibrido

    Brandonholohibrido Junior Member

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    yup, all the engine is kinda muddy, Its been raining a lot here too.
     
    #32 Brandonholohibrido, May 21, 2016
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  13. Brandonholohibrido

    Brandonholohibrido Junior Member

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    Lol, I apologize I didn't see your post before, I changed the coolant, verified that the water pump does work, I could hear it while adding coolant in the inverter.
    I cleaned the MAF and the air in take throttle, the car now makes better acceleration.
    I changed the spark plugs before all this thing started to happen.
    I still have low milage, better acceleration, maybe a little bit more juice from the HV battery and I took the car to check if I still had any codes this is what I got:
    P0420
    Catalyst system efficiency below threshold bank 1
    C1300
    P0A93

    O2 sensors?
     
    #33 Brandonholohibrido, May 26, 2016
  14. dolj

    dolj Senior Member

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    P0420 = Catalyst System Efficiency Below Threshold (Bank #1)
    C1300 = Skid Control ECU Malfunction
    P0A93 = Inverter Cooling System Performance
    What do you think? Me, I'd be diagnosing the faults I had, rather than chasing imaginary gremlins.
     
    #34 dolj, May 26, 2016
    Last edited: May 26, 2016
  15. Brandonholohibrido

    Brandonholohibrido Junior Member

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    Well, the guys said that the only one that looks like a real code is the
    P0420, But what is it exactly? do I have to change the whole Catalytic converter? thats a bunch of money.
     
    #35 Brandonholohibrido, May 26, 2016
  16. dolj

    dolj Senior Member

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    TBH, I think you need to get to the bottom of the P0A93. It is possible the C1300 is bogus, but again you want to confirm that before dismissing it out-of-hand.

    Yes, P0420, generally means the CC need to be replaced. Yes, it is a bunch of $$$. Again, you might want to investigate whether there is a reason (e.g. engine is burning a lot of oil) rather than just it is simply worn out. There are cheaper options if you are not required to keep the car up to CARB requirements.

    You need to invest $15 (as a minimum) for a 2 day subscription to techinfo.toyota.com to get access to the manuals and diagnostic information if you are serious about a DIY repair. If that is beyond you, you need to seek professional help from either a Toyota repair shop or a suitably qualified independent. Again, if you're serious about DIY repairs, it would be advisable for you to have a Prius capable code reader such as Mini VCI, Torque or Dxdiag module (amazon.com).

    Good luck.
     
    #36 dolj, May 26, 2016
  17. Brandonholohibrido

    Brandonholohibrido Junior Member

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    I cleaned the MAF and the air in take throttle, the car now makes better acceleration.
    I changed the spark plugs before all this thing started to happen.
    I still have low milage, better acceleration, maybe a little bit more juice from the HV battery and I took the car to check if I still had any codes this is what I got:
    P0420
    Catalyst system efficiency below threshold bank 1
    C1300
    P0A93

    O2 sensors?
     
    #37 Brandonholohibrido, May 26, 2016
  18. dolj

    dolj Senior Member

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    Earlier you said:
    Did you clear any codes relating to the inverter after doing this work? Did you have the P0A93 at this point? If so, clear this and see if it resets.
     
    #38 dolj, May 26, 2016
  19. Brandonholohibrido

    Brandonholohibrido Junior Member

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    yeah I had it, and I replaced the coolant, how can I reset it?
     
    #39 Brandonholohibrido, May 26, 2016
  20. dolj

    dolj Senior Member

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    Codes can be cleared with s code reader.
     
    #40 dolj, May 27, 2016
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