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p3190 code and won't start

Discussion in 'Gen 3 Prius Technical Discussion' started by kentmartin, Feb 11, 2017.

  1. Cooter

    Cooter Junior Member

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    My 2001 is doing the same thing with a full tank of gas
     
  2. Jotish kumar

    Jotish kumar New Member

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    Iam having Toyota estima 2009 having same problem
     
  3. saeddr

    saeddr New Member

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    Link it to the oil vaporizer wrap with the manafole
    upload_2020-7-4_0-31-55.png Screenshot_20200704_003125.jpg
     
  4. Mejzw

    Mejzw New Member

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    the same thing happened to me, have you found a solution?
     
  5. PriusWave

    PriusWave New Member

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    If it is losing power while driving or lurches forward from a stop it’s the fuel pump that went out. How many miles are on the car? If the fuel pump stopped working the hybrid will drain. Make sure you have gas first then try to start it and hold down the gas to get the engine to run. Keep holding it until the hybrid charges up. If you get the car running the pump may be good enough to take it to a mechanic.

    Is your prius losing power or lurching?

    Sounds like it’s the fuel pump to me
     
    #25 PriusWave, Dec 6, 2020
    Last edited by a moderator: Dec 7, 2020
  6. Leo Li

    Leo Li New Member

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    KentMartin,

    I'm having the exact same problem with my 2013 Prius V with only 52k mileage. OBD code P3190 and won't start now after power cutting out on freeway. Limped home, engine then ran really rough and knocking when I tried to start it on my garage. Tried DYI and changed spark plugs, ignition coils, fuel injectors and cleaned EGR pipe and exhaust manifold all to no avail, all I did was actually made it worse even - now it won't even start anymore. HV battery down to 1 bar due to many unsuccessful attempts to start the ICE and recharge the HV battery. Dealer says they will charge insane $600+ for just a diagnostic. Not sure what to do at this point. Might have to bite the bullet and buy the Hybrid Automative Prolong charger so that I'll at least be able to continue to attempt to try to restart the engine and try to fix the original knocking etc. Like many others here I'm too wondering if you ever figured out what was wrong for your Prius?
     
  7. paolo.rapana

    paolo.rapana Junior Member

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  8. Frank1234

    Frank1234 Member

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    So I have a experience to share regarding this matter, so I was driving to the gas station because I have only one bar of gas not blinking so I am supposed to be fine but out the blue I lost engine power and hybrid battery not charging (engine it’s not running) I pull over and quick code check with dr Prius give 3 code P0A0F P3190 P3193, so I was able to drive a bit further after getting the codes but not much, I decided before towing the car to the stealership actually one more block away, to add one gallon of gas that my wife will deliver to me so gas arrived put in car start it up, trouble code cleared, problem solved, everything is working and codes didn’t come back as they was coming back before adding the gas, I learned not to trust the gas meter since it’s little bit off it never blinked this time as normally do, so this is my experience.
     

    Attached Files:

    #28 Frank1234, Apr 27, 2021
    Last edited: Apr 27, 2021
    paolo.rapana and ASRDogman like this.
  9. MrDan

    MrDan New Member

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    Hello everyone i Have a 2010 toyota prius as well and got the error code P3190
    Hello i have the same Prius same year this exact same thing happened to me. Car stopped on the freeway. My question is can i reset the "check hybrid system " notification that comes up on the screen with a regular obd scanner? because i took it to the mechanic and he charged my $200 to "unlock the hybrid system " which im thinking now that he just may have cleared the code. and i had to replace the 12v battery myself. BTW it ended up being the 12v battery being dead and unable to provide sufficient power to the the hybrid system thats why i was getting the P3190 code. i could have saved $200 if i just changed the battery is what im getting at. But i was reading on this thread that there is mini vci? and toyota tech stream can that clear the check hybrid system lock? or was the mechanic just over charging me?
     
  10. ChapmanF

    ChapmanF Senior Member

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    P3190 means the engine produced only a small fraction of the power expected. So it is a basic code for an engine problem. It doesn't tell more than that, so the usual causes (fuel, compression, spark) just have to be worked through in some order until the cause is found. What fixes a P3190 for one person has no particular connection to what will fix it for another person, unless it happens to turn out both their engines were underperforming for the same reason.

    When there is a hybrid-system code present along with P3190, it will probably be P0A0F. That code just means the hybrid-vehicle ECU (a different ECU in the car, not the engine control module, more like the car's orchestra conductor) asked the engine control module for an amount of power from the engine, didn't get it, and doesn't know why.

    Clearing the trouble code may allow the car to repeat the attempt, but it isn't any substitute for fixing whatever the engine problem turns out to be.

    One thing to keep in mind is that if the engine is failing to start at all (which people often mistake for "starting, then dying after several seconds), then after too many attempts, the traction battery may be too low on charge to keep trying. At that point, solving the problem becomes even harder.

    Because P3190 is an engine control module code, not a hybrid-system code, that's likely to be a misdiagnosis.
     
    Brian1954 likes this.
  11. MrDan

    MrDan New Member

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    Yes I understand , so I changed the battery and now mylar is working like it was before. I don't like that a peius doesn't tell you when the 12v battery is dying tho.

    So can you recommend a better obd reader that will tell me what is actually wrong or are prises just like this ?

    It is not losing power but I've driven 20 miles on it since the battery Change and it's at 30mpg which is slightly less hayn whatbive had it at before the change
     
    #31 MrDan, May 22, 2024
    Last edited by a moderator: May 23, 2024
  12. ChapmanF

    ChapmanF Senior Member

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    Cars are just like this. They have computers in them now, and the computers can give you trouble codes, but if you expect a trouble code to tell you "what is actually wrong" you're just expecting the computer to do something it can't.

    A trouble code only tells you some specific thing the computer can actually detect, using the only sensors and inputs it happens to have. That is helpful to know, but it doesn't eliminate the job of the human. The human has to think of the possible things that could have caused the computer to see what it saw, and then test and eliminate until there's just one thing left that must have caused it to see what it saw. That is the moment when the human has worked out what is actually wrong.

    P3190 tells you the computer was expecting a certain amount of torque from the engine, and getting less than a fifth of that amount. To figure out why, the human has to remember all the basics from gasoline engine class, and apply them. There isn't very much Prius-specific about a P3190.

    It's good that the car is working better after replacing the 12 volt battery, but to conclude that the battery caused the P3190 would be a case of post hoc ergo propter hoc.