After Gasket repair, got "Check Hybrid System..." error

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by adrtho4, Jun 24, 2025.

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  1. NutzAboutBolts

    NutzAboutBolts Senior Member

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    Your latch looks secured and on properly, I wonder if it’s the big plug that you removed from the inverter that isn’t plugged in properly for the engine to run. I think your 12v battery seems to be fine because it turns on and the lights doesn’t look dim. I’d recheck the orange wire side to see if things aren’t plugged in properly or the engine side where the connectors aren’t plugged in.
     
    #41 NutzAboutBolts, Jun 25, 2025 at 4:15 PM
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  2. ASRDogman

    ASRDogman Senior Member

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    post 35 :whistle:(y)
     
    #42 ASRDogman, Jun 25, 2025 at 4:26 PM
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  3. adrtho4

    adrtho4 Junior Member

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    Yeah, I've already unplugged the battery and removed the safety pin. Will wait for the capacitors to drain (they probably have already) bust out the screenshots of the manual and check the inverter. That dr. prius app shows that the hybrid batters are good, which is great. Thanks for the callout!
     
    #43 adrtho4, Jun 25, 2025 at 4:32 PM
  4. rjparker

    rjparker Tu Humilde Sirviente

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    If that does not work disconnect the high voltage at the compressor, inspect and try with it off after a 10 second 12v disconnect. The 12v cycling can be done at the fuse box by unplugging the white cable on top. Realize a Ready usually takes a couple of attempts after cycling 12v as the networks establish.

    This video at 28:50 shows the inverter cable installation and the cover interlock connector.

     
    #44 rjparker, Jun 25, 2025 at 5:58 PM
    Last edited: Jun 25, 2025 at 6:35 PM
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  5. adrtho4

    adrtho4 Junior Member

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    Good tips. Thanks.

    EDIT: Ok. I never knew about this high voltage clip. Wow. Learn something new every day! Thanks again for the tip.
     
    #45 adrtho4, Jun 25, 2025 at 6:16 PM
  6. adrtho4

    adrtho4 Junior Member

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    Ok. Engine runs. I drove it down the street to discount tire to get some air in my tire. On the drive back, I noticed the coolant light on. It was red. Coolant was overheating. Got a P0117 error code from the scanner reader. I replaced the water pump with a TRQ Engine Water Pump. So the water pump is new. I didn't replace the thermostat though. I've just ordered a new Asin thermostat, and water pump. The thermostat arrives tomorrow, so I will replace that and hope that will solve the issue. When I replaced the coolant I did bleed the system.

    So yeah... the saga continues. Could also be a faulty ETC sensor. So will order that as well.

    Tired of working on this thing, ngl. lol
     
    #46 adrtho4, Jun 28, 2025 at 2:08 PM
  7. NutzAboutBolts

    NutzAboutBolts Senior Member

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    you’re almost there! Don’t give up! :ROFLMAO::ROFLMAO: Hopefully when I put mine back, I don’t have that code either… I’m running on oem ect sensor lol but at least my wp and thermostat was replaced ;)
     
    #47 NutzAboutBolts, Jun 28, 2025 at 6:35 PM
  8. adrtho4

    adrtho4 Junior Member

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    Yeah. I thinking it's that water pump not working. I got that Asin water pump on the way. Hopefully that works.
     
    #48 adrtho4, Jun 28, 2025 at 9:02 PM
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  9. NutzAboutBolts

    NutzAboutBolts Senior Member

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    keep us updated (y)
     
    #49 NutzAboutBolts, Jun 28, 2025 at 10:16 PM
  10. adrtho4

    adrtho4 Junior Member

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    I've replaced the thermostat and water pump with Asin thermostat and water pump respectively. I burped the coolant for 50 minutes, revving occasionally. Checked that there were no leaks, and then went for a small test drive. I was a bit nervous because the last test drive I had, after about 10 minutes, the warm coolant light came on as well as the check engine light. This time.... nothing.

    Smooth drive. I think I can finally close this head gasket chapter and it's on to the next thing.

    Big ups Prius chat. You all helped!

    On to the next one!!!
     
    #50 adrtho4, Jul 1, 2025 at 10:37 AM
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  11. NutzAboutBolts

    NutzAboutBolts Senior Member

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    nice! Congrats! I’m trying to finish my HG install while filming, it’s taking longer than I expected. I just want to be done with it by now :cry::cry:
     
    #51 NutzAboutBolts, Jul 1, 2025 at 11:39 AM
  12. Mendel Leisk

    Mendel Leisk Senior Member

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    A few more years and we’ll have A.I. drones doing the recording. :)
     
    #52 Mendel Leisk, Jul 1, 2025 at 11:49 AM
  13. ASRDogman

    ASRDogman Senior Member

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    Take a deep breath, and count to a thousand by sixes!
    Wanting it to be done, is when you make mistakes! (y):eek:

    Step away, take a break...... You certainly don't want to make any mistakes.

     
    #53 ASRDogman, Jul 1, 2025 at 12:04 PM
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  14. adrtho4

    adrtho4 Junior Member

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    That was literally me yesterday. And I understand. I appreciate you filming it's going to help out so many.



    This.. this is the way. haha
     
    #54 adrtho4, Jul 1, 2025 at 12:25 PM
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  15. NutzAboutBolts

    NutzAboutBolts Senior Member

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    Hoping to finish by tomorrow! (y)
     
    #55 NutzAboutBolts, Jul 1, 2025 at 7:39 PM
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