B2324 B2787, B2786, U0155, U0142 codes

Discussion in 'Prius v Technical Discussion' started by Ohid, Jul 1, 2022.

  1. Ohid

    Ohid Member

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    Car is giving B2324 B2787, B2786, U0155, U0142 codes with knocking during shifting EV to engine.

    Does ecu is going bad?
     

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  2. ChapmanF

    ChapmanF Senior Member

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    While it's possible for ECUs to go bad, they are no-moving-parts solid-state devices and it isn't common.

    You have a collection of codes that are about communication issues between different ECUs. I would open the repair manual (probably to the Multiplex Communication section, first) and start working through the diagnosis of the communication networks. A wiring or connection issue would be on my list of suspects, ahead of possible ECUs going bad.

    Toyota Service Information and Where To Find It | PriusChat
     
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  3. Air_Boss

    Air_Boss Senior Member

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    Flood car?
     
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  4. Ohid

    Ohid Member

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    Not really.
     
  5. Air_Boss

    Air_Boss Senior Member

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    Corrosion at electrical connections is one clue.
     
  6. ChapmanF

    ChapmanF Senior Member

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    Not really immersed in a real flood? Or really immersed in a fake flood?
     
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  7. Ohid

    Ohid Member

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    I chatted with car owner. He informed me nothing was happened like flooding the car or have any accidents. He disconnected 12v Battery and all the codes disappeared. He visited Toyota dealership, they only cleaned spark plugs and fuel injectors.
     
  8. Air_Boss

    Air_Boss Senior Member

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    Yet codes are back, so…
     
  9. ChapmanF

    ChapmanF Senior Member

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    Might turn out to be something besides flooding. Just seemed a likely guess.
     
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  10. Tim Jones

    Tim Jones Senior Member

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    Sell it....................