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Red Triangle no code

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Hakam, Apr 10, 2023.

  1. Hakam

    Hakam Junior Member

    Joined:
    Jul 31, 2022
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    Location:
    Jordan, Amman
    Vehicle:
    2008 Prius
    Model:
    II
    Hai folks. Recently, the red triangle of death showed up while driving, it did nothing and sometimes it disappear and other times reappear. Many said it is the inverter pump but i noticed it works just fine and oil is not low. I had obd2 and managed to get these codes but I don't think any of them has something to do with that. Some mechanic told me that there might me some water that went inside of the vehicle compartment that caused this issue, and that is why the triangle is disappearing and reappearing. Anyone got any ideas?. And I don't have a catalytic invert and my abs is almost dead.

    Here are the codes

    Car Scanner ELM OBD2
    Version: 1.98.0/400980/GP
    DTC report
    Connection profile: Toyota Prius Gen. 2 (2004-2009)Date: 4/10/2023 3:43:53 PM
    VIN: JTD
    ============================
    OBD-IIOBD-II
    DTCs: 5
    ----------------------------
    P0037 [0x0037]
    Heated oxygen sensor (HO2S) 2, bank 1, heater control - circuit low
    Oxygen Sensor Heater Circuit Low Input (Bank 1, Sensor 2)
    Status: Confirmed
    ----------------------------
    P1121 [0x1121]
    Throttle Position (TP) Sensor Circuit Intermittent High Voltage
    Accelerator Pedal Position Sensor Range / Performance Problem
    Status: Confirmed
    ----------------------------
    P1123 [0x1123]
    Throttle Position Sensor In Range But Higher Than Expected
    Status: Confirmed
    ----------------------------
    U0100 [0xC100]
    Data bus, engine control module (ECM) A - no communication
    Status: Confirmed
    ----------------------------
    U0111 [0xC111]
    Data bus, battery energy control module A - no communication
    Status: Confirmed
    ============================
    Engine control unit #1
    No DTC found.
    ============================
    Hybrid engine systemHybrid engine system
    DTCs: 2
    ----------------------------
    U0100 [0xC100]
    Data bus, engine control module (ECM) A - no communication
    Status: Confirmed
    ----------------------------
    U0111 [0xC111]
    Data bus, battery energy control module A - no communication
    Status: Confirmed
    ============================
    HV battery
    No DTC found.
     
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    110,129
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    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    it could be corrosion or a bad ecu connector. how is the 12 volt health?

    tech stream might present some helpful sub codes
     
  3. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
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    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    The U codes for the hybrid system could certainly light the triangle.