1. Attachments are working again! Check out this thread for more details and to report any other bugs.

ECU error code: P3000, P3140, P0A84

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Brando714, Jun 10, 2020.

  1. Brando714

    Brando714 Member

    Joined:
    Jun 2, 2020
    101
    16
    0
    Location:
    Anaheim, CA
    Vehicle:
    2004 Prius
    Model:
    ----USA----
    Hello there members. I recently purchased an 04 Prius and did a lot of maintenance to it except for the battery pack. I did buy a bluetooth OBD2 and TorquePro and Dr. Prius (both the paid version). No engine lights are on and no code pops up with OBD2 scanner but after scanning battery life with Dr. Prius, the codes mentioned in the title (P3000, P3140, and P0A84) popped up. Please guide me through what I can do to fix these problems thank you. P.S. I would be posting this same post on the Main Chat as well so sorry if you see this same post on here.
     

    Attached Files:

  2. Aaron Vitolins

    Aaron Vitolins Senior Member

    Joined:
    Feb 28, 2014
    1,612
    1,144
    0
    Location:
    Franklin TN
    Vehicle:
    Other Hybrid
    Model:
    N/A
    Looks like the hybrid battery fan isn’t working properly. Pull the fan and clean it, and inspect the connectors for corrosion.
     
    SFO likes this.
  3. Brando714

    Brando714 Member

    Joined:
    Jun 2, 2020
    101
    16
    0
    Location:
    Anaheim, CA
    Vehicle:
    2004 Prius
    Model:
    ----USA----
    You know what? I did recently clean the fan and noticed corrosion on the harness and posted a thread about that. I ended up buyong DeOxyit spray so I will be doing that tomorrow. Thank you very much
     

    Attached Files:

  4. George W

    George W Active Member

    Joined:
    Mar 12, 2018
    909
    510
    1
    Location:
    San Antonio
    Vehicle:
    2008 Prius
    Model:
    Touring
    Baking soda, water, and an old toothbrush would work better
     
  5. Brando714

    Brando714 Member

    Joined:
    Jun 2, 2020
    101
    16
    0
    Location:
    Anaheim, CA
    Vehicle:
    2004 Prius
    Model:
    ----USA----
    Damn, I received the DeOxyit spray off Amazon for $15 already. I saw a cheaper alternative but the spray can at least lubricates and protects there electric parts as well, not just clean, so I guess in the long run hopefully it'd be worth it. Thanks for your input though. By the way, I used scented baking soda for the interior of my car and vacuumed it the next day because it absorbs bad odor
     
  6. George W

    George W Active Member

    Joined:
    Mar 12, 2018
    909
    510
    1
    Location:
    San Antonio
    Vehicle:
    2008 Prius
    Model:
    Touring
    Vinegar or lemon juice on a toothbrush also works with corrosion on terminals, if you're Deoxit runs out. But then you need the baking soda to neutralize the weak acid left behind.
     
  7. Aaron Vitolins

    Aaron Vitolins Senior Member

    Joined:
    Feb 28, 2014
    1,612
    1,144
    0
    Location:
    Franklin TN
    Vehicle:
    Other Hybrid
    Model:
    N/A
    Uh I don’t know if I’m seeing this correctly, but the female plug looks so corroded, it has a pin or two stuck in to it. If I so that would totally be an issue!
     
    Raytheeagle likes this.
  8. Raytheeagle

    Raytheeagle Senior Member

    Joined:
    Jul 1, 2016
    11,251
    15,474
    0
    Location:
    Bay Area, California
    Vehicle:
    2019 Prius Prime
    Model:
    Prime Plus
    If nothing else, the corrosion is problematic;).

    Definitely explains a few things(y).
     
  9. Aaron Vitolins

    Aaron Vitolins Senior Member

    Joined:
    Feb 28, 2014
    1,612
    1,144
    0
    Location:
    Franklin TN
    Vehicle:
    Other Hybrid
    Model:
    N/A
    Definitely! Some spray isn’t going to help that. He very well may have to get a new connector or re wire it.
     
    Raytheeagle likes this.
  10. dolj

    dolj Senior Member

    Joined:
    May 14, 2012
    7,447
    3,750
    0
    Location:
    Wellington, New Zealand
    Vehicle:
    2007 Prius
    Model:
    N/A
    Please do not do this. Pick a forum and post once.
     
  11. Brando714

    Brando714 Member

    Joined:
    Jun 2, 2020
    101
    16
    0
    Location:
    Anaheim, CA
    Vehicle:
    2004 Prius
    Model:
    ----USA----
    UPDATE: Hey guys! So I sprayed DeOxyit to the contacts on the harness I provided the pic with and it worked!!! I did a quick burst on both ends of the contacts, used a toothbrush to kind of brush it off lightly, did another quick burst and then plugged/unplugged about 3-4 times. Using the same Dr. Prius that read the 3 codes, I scanned it again and it is gone now. Just for extra measures, I drove 25 miles on the freeway and rechecked it, and it is still gone. Yay yay!
     
    Aaron Vitolins likes this.
  12. fotomoto

    fotomoto Senior Member

    Joined:
    Apr 22, 2009
    5,596
    3,770
    0
    Location:
    So. Texas
    Vehicle:
    Other Hybrid
    Unless that spray somehow repaired that connector AND the cause of the corrosion, the codes will come back eventually.

    Judging by your forum activity, it sounds like you want to be very pro-active with this car (and that's a good thing). So, I suggest you determine the state of your HV battery. Is it original, used or what? The best way is to pull a code number of the top of one or more of the modules. It's actually a date code and they should all match. Rebuilts won't.

    GOOD LUCK!
     
    SFO likes this.
  13. Brando714

    Brando714 Member

    Joined:
    Jun 2, 2020
    101
    16
    0
    Location:
    Anaheim, CA
    Vehicle:
    2004 Prius
    Model:
    ----USA----
    Hi. I purchased the paid version of Dr. Prius and it shows that my battery is at 58.30% fair condition. When I have time, I am going to further look into reconditioning the battery with equipment's to charge/drain I will look into if other's think it will be worth it for my state of battery or to just wait for some time and then swap it out with a reconditioned one