2010 prius check hybrid system

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by freebird1, Oct 29, 2021.

  1. freebird1

    freebird1 New Member

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    2010 prius check hybrid system
    getting this on dashboard

    disconnected both HV and 12V batteries and connected
    will update on this issue from mechanic
     

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  2. freebird1

    freebird1 New Member

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    change Inverter as per mechanic car engine starts but makes clicking noises
     

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  3. bisco

    bisco cookie crumbler

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    did they give you the trouble codes?

    how many miles on her?

    edit: just saw your pic, is that tech stream? is it a hybrid specialist?
     
  4. ChapmanF

    ChapmanF Senior Member

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    Looks kind of Dr. Prius-like, only on a tablet.
     
  5. freebird1

    freebird1 New Member

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    mechanic used tablet for codes as in picture name, found him from classifieds ads in this big city (Texas)

    maybe its drprius app or there are other apps professionals use ?

    He also used a red device towards end of repair to clear abs light


    So i have to see if abs light will come back on later
    Main issue as per him is bad inverter and after replacement its in ready mode good
     
    #5 freebird1, Oct 30, 2021
    Last edited: Oct 31, 2021
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  6. Mendel Leisk

    Mendel Leisk Sand Pounder

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    How many miles?
     
  7. freebird1

    freebird1 New Member

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    177K+Miles
     
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  8. freebird1

    freebird1 New Member

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    getting all the lights again and engine has rattling sound ,little cold outside ,but does go into ready mode later

    will ask technician to check obd codes clear and his inverter replacement solved code p0a94 or another issue

    these are exact ones before would get check hybrid no ready ,now can get ready but same lights
    these went away after a while ,checked twice same briefly see them but after a little bit they went away and could drive
     

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    #8 freebird1, Oct 31, 2021
    Last edited: Oct 31, 2021
  9. bisco

    bisco cookie crumbler

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    have you ever had the egr circuit cleaned?
     
  10. freebird1

    freebird1 New Member

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    mechanic said its not egr problem and didnt want to look after p0300 code,hes not willing to check other issues
     
    #10 freebird1, Oct 31, 2021
    Last edited: Oct 31, 2021
  11. freebird1

    freebird1 New Member

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    day 2 update
    "p0300 random multiple cylinder misfire detected "
    update from mechanic ,suggested to do blue devil procedure or replace engine,
    he was not willing to look at egr


    if finding another mechanic whos willing to check egr can improve or replace engine is the only option ?


    from below it looks like temporary fix or it could make it worse
    Gen 2 Blown Head Gasket; Seal it with Blue Devil? | PriusChat
     
    #11 freebird1, Oct 31, 2021
    Last edited: Oct 31, 2021
  12. AzusaPrius

    AzusaPrius Active Member

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    Fire your mechanic and buy a Carista OBD2 adapter.
    Then download the Dr. Prius app for free.

    The app will give you more prius codes than your mechanics.
     
  13. ASRDogman

    ASRDogman Senior Member

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    NEVER NEVER EVER use any "sealant"!!!!
    It only causes more headaches and does NOT fix the problem.
    IF you have a blown head gasket, you need to replace it, or have it replaced.

    If that clown won't even look at the egr circuit, find someone who will.
    Perhaps it's time to learn how to do the work???


     
  14. Mendel Leisk

    Mendel Leisk Sand Pounder

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    Yeah turf that mechanic out. If you've got code p03xx, and 177K miles (apologies for not seeing your earlier mention of miles), you've very likely got a failing head gasket, and likely due to a carbon-bunged EGR system, including EGR passages in the intake manifold.

    Finding another mechanic, capable of a leak-down test to determine head gasket condition, would be my next step. If it does turn out to be a failing head gasket, and you follow through by replacing it, get the EGR system cleanined directly thereafter, to avoid a repeat. More info in my signature.
     
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  15. bisco

    bisco cookie crumbler

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    ^^^yep^^^
     
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  16. freebird1

    freebird1 New Member

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    Update
    New mechanic did another diagnos got p0301
    Replaced 4xsparks and 1st cylinder coil
    After other tests confirmed head gasket is ok , maybe also confirmed tests no egr issue as but didn't get to open egr ,time was short

    But car still rumble on startup and same problem
    Getting new codes to replace coils 1 2 3 4 cylinder s ,only coil 1 was replaced

    P0351 p0352 p0353 p0354

    Odd the rumbling is bad than before but only during startup codes all changing


    Also was told could be clogged catalytic
    And to
    Try lucas cylinder lubricant ,
    guaranteed to pass additives into fuel tank and run till empty

    Techron looks recommended here in forums

    Car runs ok after rumbling startup, haven't gone on highway to check if spees ok to 60mph

    Trying to see if really coils were bad or other issue
    Or the tsb of shaking on startup of 2010 prius but this is >150k miles so may not apply

    Any other things to check
     
  17. freebird1

    freebird1 New Member

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    Mechanic tried to do hard reset removing both terminals of 12v batt with jumper cables but stopped as not sure how prius electric would behave
    Is hard reset to clear all codes ok on prius
     
  18. Mendel Leisk

    Mendel Leisk Sand Pounder

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    EGR never been cleaned, 180K miles, P0301? It doesn't take Sherlock Holmes: I think you'll find carbon-bunged EGR, and head gasket leaking coolant into cylinder one.
     
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