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Dreaded P3006 Leak Detected DOC 20%

Discussion in 'Generation 1 Prius Discussion' started by DRACO, Jun 2, 2018.

  1. DRACO

    DRACO Member

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    One
    So MIL had code P3000 & P3006, DOC over 20% (36%) serviced (cleaned) and replaced Bus Bar ( could have cleaned it but why bother at $114 )

    Code popped up again but not DOC at 20%

    Prior to service CEL cleared on its own and ran great

    So I am thinking it may be the HV ecu just work out or faulty sensors and or solders due to high mileage?

    Anyone else experiencing this?

    Tia

    Jim
     
    #1 DRACO, Jun 2, 2018
  2. dabard051

    dabard051 Tinkerer-in-Charge

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    #2 dabard051, Jun 3, 2018
  3. DRACO

    DRACO Member

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    Hey Thanks for your Post

    My bad sub code is 123, I have a techstream

    The thing is I installed a new from dealer bus bar ergo the better DOC

    It is just odd that with a DOC 20% it still trips the Triangle of Death

    One thing to note is when I did place the new bar on after cleaning all the terminals I accidentally arced the battery bank 1 and may have compromised a sensor on the back side, I cleaned the spot weld on the bar but I suspect it may have been damaged. I will find out with the new one once I receive it.

    Good call on connection to the HV ecu,I will check the connection for corrosion prior to install.

    I am leaning towards bad ecu if new bus bar fails

    Jim
     
    #3 DRACO, Jun 3, 2018
  4. dabard051

    dabard051 Tinkerer-in-Charge

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    much depends on the age and driving/thermal history of the battery pack.
    DOC? do you mean SOC (State of Charge)?
    Here is some more reading:
    Gen 1 Prius Battery Failure, P3006 - Luscious Garage | Hybrid Specialists
    and this (old, but informative)
    Gen1 Codes P3000 sub code 123 | PriusChat
    DTC P3000 INF 123 says "battery system", fuse, battery cooling system, power cable.
    I'd look to see if the battery cooling fan is properly operational; the rest is inspections.
    If you have the battery pack out, measure and record ALL the battery voltages with a DMM.
    If the highest-to-lowest differential is too big, that may set a code. But I think it's a different subcode.
    If the fan is okay, running...
    It may be time to consider a whole new battery pack. Your time is worth money, too.
    Best of luck...
     
    #4 dabard051, Jun 3, 2018
    Last edited: Jun 3, 2018
  5. DRACO

    DRACO Member

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    One
    Yeah I have to admit I did it quickly

    I will check all the connection this thing me around

    Actually I can remove and reinstall on 2 hours

    The cleaning takes forever
     
    #5 DRACO, Jun 3, 2018
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