P3191 No start

Discussion in 'Prius v Care, Maintenance and Troubleshooting' started by DavidDavid, Mar 15, 2023.

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  1. DavidDavid

    DavidDavid Junior Member

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    I have 2012 Prius V with this code P3191 No start issue, I think it sounds like it is starting but it's not, I cleaned the EGR, intake manifold and MAF sensor, but I am sill getting the same issue, I am planning to replace the spark plugs, fuel injectors and the fuel pump. what do you think?
     
    #1 DavidDavid, Mar 15, 2023
  2. bisco

    bisco cookie crumbler

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    are you using tech stream? any sub codes to help narrow it down?
     
    #2 bisco, Mar 15, 2023
  3. Brian1954

    Brian1954 Member

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    Code P3191 does not have a sub code.

    Posted via the PriusChat mobile app.
     
    #3 Brian1954, Mar 15, 2023
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  4. Brian1954

    Brian1954 Member

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    What is the milage?

    Did you have the no start P3191 before or after cleaning the EGR, intake manifold , and MAF sensor?

    Did you clean the throttle body?

    Also check for a vacuum hose that did not get connected.

    Posted via the PriusChat mobile app.
     
    #4 Brian1954, Mar 15, 2023
  5. DavidDavid

    DavidDavid Junior Member

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    I am using techstream, I think there was no subcodes.
     
    #5 DavidDavid, Mar 17, 2023 at 9:59 AM
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  6. DavidDavid

    DavidDavid Junior Member

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    #6 DavidDavid, Mar 17, 2023 at 10:02 AM
  7. Brian1954

    Brian1954 Member

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    Check the spark plugs first and then the fuel pump.

    How many miles on the Prius?

    Posted via the PriusChat mobile app.
     
    #7 Brian1954, Mar 17, 2023 at 7:10 PM
  8. Tim Jones

    Tim Jones Senior Member

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    Do Not change all that without knowing what's going on.
    They could all be fine.
    Better investigate more.

    Did this just happen out of the blue?
     
    #8 Tim Jones, Mar 17, 2023 at 9:46 PM
  9. DavidDavid

    DavidDavid Junior Member

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    I agree, that’s what I am going to do
     
    #9 DavidDavid, Mar 18, 2023 at 1:12 AM
  10. DavidDavid

    DavidDavid Junior Member

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    The reason why I changed all those stuff, it’s because I had them in my place, so I thought I’ll try that and see, I have just bought this vehicle, a couple weeks ago.
     
    #10 DavidDavid, Mar 18, 2023 at 1:15 AM
  11. Tim Jones

    Tim Jones Senior Member

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    This is just the beginning of your gen 3 problems.............
     
    #11 Tim Jones, Mar 19, 2023 at 11:44 AM
  12. ttou68

    ttou68 Active Member

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    The possible trouble areas for a P3190 are:

    Air induction system malfunction.
    Defective throttle body.
    Improper fuel pressure.
    Defective engine.
    Defective Mass Airflow (MAF) meter.
    Vehicle is out of fuel.
    Defective Engine Coolant Temperature (ECT) sensor.
    Defective crankshaft position sensor.
    Defective camshaft position sensor.
    Defective Engine Control Module (ECM).

    Posted via the PriusChat mobile app.
     
    #12 ttou68, Mar 19, 2023 at 12:27 PM
  13. DavidDavid

    DavidDavid Junior Member

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    Thank you, I checked most of these things, I will check or replace the rest
     
    #13 DavidDavid, Mar 19, 2023 at 9:03 PM
  14. DavidDavid

    DavidDavid Junior Member

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    I worked on this vehicle this past weekend, changed the fuel pump with a used one, but that didn’t solve the problem, but when I checked the new used pump, i found out that it’s not running at all, the old one was working.
     
    #14 DavidDavid, Mar 19, 2023 at 9:10 PM
  15. DavidDavid

    DavidDavid Junior Member

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    I took out the spark plugs and put Borescope inside and i have found out that there is water or coolant in every cylinder,
     
    #15 DavidDavid, Mar 20, 2023 at 9:51 AM
  16. Tim Jones

    Tim Jones Senior Member

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    DO NOT purchase a used Gen 3................. they get great mpg but when things go wrong there goes all of the fuel savings and the trouble that goes with this HG problem... plus the possible oil consumption, brake system and big (traction) battery failure in the back and the most likely inverter failure a long way from home. Could easily cost $6000 or more if you can't do the repairs yourself.
    I'm still driving toys everyday... but they are ICE.
     
    #16 Tim Jones, Mar 20, 2023 at 10:50 AM
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  17. DavidDavid

    DavidDavid Junior Member

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    I agree, if you are DIYer or know a good cheap mechanic, don't buy a used hybrid vehicle,
     
    #17 DavidDavid, Mar 20, 2023 at 12:23 PM
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  18. Tim Jones

    Tim Jones Senior Member

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    I knew a couple from Starbucks..... I told them the car was going to blow the head gasket.... they just skoffed at my comment. and told me it's the best car they have ever had... thought i was totally wrong....even told them to trade it off or get online and read about it.... then a couple of months later I seen them driving a toy SUV... asked what happened to prius.... blown head gasket, got hot ruined the engine.... and this happened on I10 between San Antone and Houston in the summer.........
     
    #18 Tim Jones, Mar 20, 2023 at 2:01 PM
    Last edited: Mar 20, 2023 at 2:08 PM
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