Multiple "Communication Lost" errors

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Jaron Lindow, Nov 18, 2018.

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  1. Jaron Lindow

    Jaron Lindow Junior Member

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    2007 Prius
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    The following set of error codes all occurred today during a 180 mile drive with a 2007 Prius.
    At one point, the Park/Reverse/Neutral/Drive/B indicator started blinking and the vehicle lost power until it was turned off then back on.

    Hybrid Control
    P0A1D-615 - Hybrid Powertrain Control Module
    P3000-123 - Battery Control System
    U0100-212 - Lost Communication with ECM/PCM "A"
    U0111-208 - Lost Communication with Battery Energy Control Module "A"
    U0129-222 - Lost Communication with Brake System Control Module

    Engine and ECT
    P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
    U0293 - Lost Communication with Hybrid Vehicle Control System

    Cruise Control
    U0129 - Lost Communication with Brake System Control Module

    ABS/VSC/TRAC
    U0293 - Lost Communication with Hybrid Vehicle Control System

    Any ideas what could cause so many communication failures? lost com with vehicle.png errorcodes-generic.png u0293.png u0129-brakes.png p0420-pg5-5.png p0420-pg4-5.png p0420-pg3-5.png p0420-pg2-5.png p0420-pg1-5.png u0129.png u0111.png u0100.png p3000.png P0A1D.png errorcodes.png
     
    #1 Jaron Lindow, Nov 18, 2018
  2. bisco

    bisco cookie crumbler

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    rodents?
     
    #2 bisco, Nov 18, 2018
  3. Jaron Lindow

    Jaron Lindow Junior Member

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    [​IMG]
     
    #3 Jaron Lindow, Nov 18, 2018
    bisco likes this.
  4. Jmack111

    Jmack111 Member

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    #4 Jmack111, Nov 18, 2018
  5. Jmack111

    Jmack111 Member

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    #5 Jmack111, Nov 18, 2018
  6. Jaron Lindow

    Jaron Lindow Junior Member

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    HV-P112 page 7.png
     

    Attached Files:

    #6 Jaron Lindow, Nov 18, 2018
  7. Jaron Lindow

    Jaron Lindow Junior Member

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    Negative on 12v flashing.
     
    #7 Jaron Lindow, Nov 18, 2018
  8. Jmack111

    Jmack111 Member

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    So many problems test the battery or your missing a ground to the computer

    Posted via the PriusChat mobile app.
     
    #8 Jmack111, Nov 18, 2018
  9. brdmb

    brdmb Junior Member

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    Was any port in use? That is to say, I once bought a cheap OBDII Bluetooth adapter and ended up getting some very strange communication problems when I plugged it into my '07 Prius - seemed like the cheap unit hosed the comms bus. Unplugged it and everything went back to normal.

    Posted via the PriusChat mobile app.
     
    #9 brdmb, Nov 19, 2018
  10. Jaron Lindow

    Jaron Lindow Junior Member

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    I had an OBDLink MX plugged in at the time with Torque Pro running on the phone. I did notice it was having some trouble communicating with the car.
     
    #10 Jaron Lindow, Nov 19, 2018
  11. ChapmanF

    ChapmanF Senior Member

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    #11 ChapmanF, Nov 19, 2018
  12. Ricardo Oliveira

    Ricardo Oliveira Junior Member

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    how are you? I have the same problem today on my prius. What was the solution found in your case? Any tips?
     
    #12 Ricardo Oliveira, Oct 11, 2021
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