Multiple Trouble Codes

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Strayyycat, Nov 10, 2020.

  1. Strayyycat

    Strayyycat Junior Member

    Joined:
    Mar 8, 2013
    1
    0
    0
    Vehicle:
    2008 Prius
    Model:
    II
    Hello my Prius brethren. I have encountered a problem of multiple trouble codes recently and could use some advice.

    My 2013 Prius trim level 3 was running fine until a week ago when it started coming up with the check hybrid system warning. I would reset it and it would run fine for a few days before setting the warning again. Recently it won't make it a mile or so until setting it.

    Also it sets various lights on the dash. This morning was a traction and ABS warning which graduated to a full hybrid alert. The speedometer will randomly show speed, then zero, alternating. Also low oil pressure (it's good), seat belts, etc.

    I replaced the 12v battery as per suggestions here. No help. As I said the warnings were intermittent but are now constant.

    I ran an OBDII scan and these are the codes showing. Any suggestions on where to start looking for be greatly appreciated.


    ============1==============
    U0129
    Raw code: C129
    ECU: 7EA
    Status: Confirmed
    OBDII: Data bus, brake system control module - no communication
    ============2==============
    U0140
    Raw code: C140
    ECU: 7EA
    Status: Confirmed
    OBDII: Data bus, body control module (BCM) - no communication
    ============3==============
    U1107
    Raw code: D107
    ECU: 7EA
    Status: Confirmed
    ============4==============
    C1202
    Raw code: 5202
    ECU: ABS control unit #2
    Status: Confirmed
    ============5==============
    C1465
    Raw code: 5465
    ECU: ABS control unit #2
    Status: Confirmed
    ============6==============
    U0073
    Raw code: C073
    ECU: ABS control unit #2
    Status: Confirmed
    OBDII: Control module - data bus Off
    ============7==============
    U0123
    Raw code: C123
    ECU: ABS control unit #2
    Status: Confirmed
    OBDII: Data bus, yaw rate sensor module - no communication
    ============8==============
    U0124
    Raw code: C124
    ECU: ABS control unit #2
    Status: Confirmed
    OBDII: Data bus, lateral acceleration sensor module - no communication
    ============9==============
    U0126
    Raw code: C126
    ECU: ABS control unit #2
    Status: Confirmed
    OBDII: Data bus, steering position sensor control module - no communication
    ============10==============
    U0293
    Raw code: C293
    ECU: ABS control unit #2
    Status: Confirmed
    OBDII: Lost communication with hybrid powertrain control module
    ============11==============
    U0129
    Raw code: C129
    ECU: Hybrid engine system
    Status: Confirmed
    OBDII: Data bus, brake system control module - no communication
    ============12==============
    U0140
    Raw code: C140
    ECU: Hybrid engine system
    Status: Confirmed
    OBDII: Data bus, body control module (BCM) - no communication
    ============13==============
    U1107
    Raw code: D107
    ECU: Hybrid engine system
    Status: Confirmed
    ============14==============
    B1206
    Raw code: 9206
    ECU: BCM #1/Convenience systems
    Status: Confirmed
    ============15==============
    B2321
    Raw code: A321
    ECU: BCM #1/Convenience systems
    Status: Confirmed
    ============16==============
    B2312
    Raw code: A312
    ECU: Electric window/Passenger door
    Status: Confirmed
    ============17==============
    B2312
    Raw code: A312
    ECU: Electric window/Rear left door
    Status: Confirmed
    ============18==============
    B278C
    Raw code: A78C
    ECU: Entry & start / Smart key
    Status: Confirmed
    ============19==============
    U0100
    Raw code: C100
    ECU: Entry & start / Smart key
    Status: Confirmed
    OBDII: Data bus, engine control module (ECM) A - no communication
    ============20==============
    U0142
    Raw code: C142
    ECU: Entry & start / Smart key
    Status: Confirmed
    OBDII: Data bus, body control module (BCM) B - no communication
    ============21==============
    U0155
    Raw code: C155
    ECU: Entry & start / Smart key
    Status: Confirmed
    OBDII: Data bus, instrumentation control module - no communication
    ============22==============
    U0293
    Raw code: C293
    ECU: Entry & start / Smart key
    Status: Confirmed
    OBDII: Lost communication with hybrid powertrain control module
    ============23==============
    U0129
    Raw code: C129
    ECU: Power source control
    Status: Confirmed
    OBDII: Data bus, brake system control module - no communication
    ============24==============
    U0293
    Raw code: C293
    ECU: Power source control
    Status: Confirmed
    OBDII: Lost communication with hybrid powertrain control module
     
  2. 2010_Prius_Bro

    2010_Prius_Bro Junior Member

    Joined:
    Jun 20, 2018
    7
    0
    0
    Location:
    maryland
    Vehicle:
    2010 Prius
    Model:
    III
    Hey, I have a similar problem to yours. Just showed up on my 2010 Prius a few days ago. Very similar codes with same warning lights. Did you find out what the problem is? Or maybe a solution? My Obd2 scanner worked initially to read codes but now fails to connect to ecu. I have tried multiple other obds and even techstream and it won’t connect to the ecu anymore so I am stuck.


    iPhone ?
     
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