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Replaced 12V months ago, and still get this issue from time to time

Discussion in 'Prime Care, Maintenance and Troubleshooting' started by FlyMode, Nov 18, 2024 at 11:19 AM.

  1. FlyMode

    FlyMode Junior Member

    Joined:
    Apr 22, 2023
    14
    12
    0
    Location:
    GTA
    Vehicle:
    2018 Prius Prime
    Model:
    Prime Premium
    For context my 12v was low so I replaced it because I was getting the Christmas tree effect.

    It stopped for a while but from time to time comes back and goes away. Happening more frequently. Usually I know it's going to happen when the ABS starts kicking in on light breaking. Shortly after the Christmas tree arrives.

    Dealerships are still 2-3 weeks backed up and aren't willing to really help.

    I'm just curious if there's something I can do or if someone has any idea. Attached is a few screen shots from my scanner app and a written report of everything!

    Any info helps thanks!! Screenshot_20241118_111136.jpg Screenshot_20241118_111142.jpg

    Car Scanner ELM OBD2
    Version: 1.106.0/401060/GP
    DTC report
    Connection profile: Toyota OBD-II / EOBDDate: 2024-11-18 11:11:45 AM
    VIN: JTDKARFP5J3070172
    ============================
    OBD-IIOBD-II
    DTCs: 2
    ----------------------------
    C050D [0x450D]
    Status: Confirmed
    ----------------------------
    C0510 [0x4510]
    Status: Confirmed
    ============================
    Engine control unit #2Engine control unit #2
    DTCs: 44
    ----------------------------
    P2610(93) [0x261093] Archive (inactive)
    Engine control module (ECM) - internal engine off timer performance
    Status: Test failed since last DTC clear
    ----------------------------
    P10AA(00) [0x10AA00]
    Status: Test not completed during this operation cycle
    ----------------------------
    P050A(00) [0x050A00]
    Idle air control (IAC) valve, cold start - performance problem
    Status: Test not completed during this operation cycle
    ----------------------------
    P050B(00) [0x050B00]
    Ignition timing, cold start - performance problem
    Status: Test not completed during this operation cycle
    ----------------------------
    P0125(00) [0x012500]
    Insufficient coolant temperature for closed loop fuel control
    Insufficient Engine Coolant Temperature for Closed Loop Fuel Control
    Status: Test not completed during this operation cycle
    ----------------------------
    P011B(62) [0x011B62]
    Engine coolant temperature (ECT)/intake air temperature (IAT) - correlation
    Status: Test not completed during this operation cycle
    ----------------------------
    P0128(00) [0x012800]
    Coolant thermostat - coolant temperature below thermostat regulating temperature
    Coolant Temperature below Thermostat Regulating Temperature
    Status: Test not completed during this operation cycle
    ----------------------------
    P1420(00) [0x142000]
    Catalyst Temperature Sensor Failure
    Intake Constrictor CTRL Circuit Open or Short
    Status: Test not completed during this operation cycle
    ----------------------------
    P1421(00) [0x142100]
    Catalyst Damage
    Status: Test not completed during this operation cycle
    ----------------------------
    P1422(00) [0x142200]
    EGI Temperature Sensor Failure
    Status: Test not completed during this operation cycle
    ----------------------------
    P1423(00) [0x142300]
    EGI Functionality Test Failed
    Status: Test not completed during this operation cycle
    ----------------------------
    P2400(7E) [0x24007E]
    Evaporative emission (EVAP) leak detection pump, control - open circuit
    Status: Test not completed during this operation cycle
    ----------------------------
    P2400(7F) [0x24007F]
    Evaporative emission (EVAP) leak detection pump, control - open circuit
    Status: Test not completed during this operation cycle
    ----------------------------
    P2418(7E) [0x24187E]
    Evaporative emission (EVAP) switching valve - open circuit
    Status: Test not completed during this operation cycle
    ----------------------------
    P2418(7F) [0x24187F]
    Evaporative emission (EVAP) switching valve - open circuit
    Status: Test not completed during this operation cycle
    ----------------------------
    P043F(00) [0x043F00]
    Evaporative emission (EVAP) leak detection system reference orifice - excessive flow detected
    Status: Test not completed during this operation cycle
    ----------------------------
    P043E(00) [0x043E00]
    Evaporative emission (EVAP) leak detection reference orifice - low flow
    Status: Test not completed during this operation cycle
    ----------------------------
    P0441(7E) [0x04417E]
    Evaporative emission (EVAP) system - incorrect flow detected
    Evaporative Control Incorrect Flow Detected
    Status: Test not completed during this operation cycle
    ----------------------------
    P0441(7F) [0x04417F]
    Evaporative emission (EVAP) system - incorrect flow detected
    Evaporative Control Incorrect Flow Detected
    Status: Test not completed during this operation cycle
    ----------------------------
    P2450(7E) [0x24507E]
    Evaporative emission (EVAP) switching valve - performance problem or valve stuck open
    Status: Test not completed during this operation cycle
    ----------------------------
    P2451(7F) [0x24517F]
    Evaporative emission (EVAP) switching valve - valve stuck closed
    Status: Test not completed during this operation cycle
    ----------------------------
    P1450(2A) [0x14502A]
    Unable To Bleed Up Fuel Tank Vacuum
    Status: Test not completed during this operation cycle
    ----------------------------
    P148F(00) [0x148F00]
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P0171(00) [0x017100]
    System too lean, bank 1
    Bank 1 System Too Lean
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P0172(00) [0x017200]
    System too rich, bank 1
    Bank 1 System Too Rich
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P0069(00) [0x006900]
    Manifold absolute pressure (MAP) sensor/barometric pressure (BARO) sensor - correlation
    Manifold Absolute Pressure Sensor / Barometric Air Pressure Sensor Correlation
    Status: Test not completed during this operation cycle
    ----------------------------
    P1605(00) [0x160500]
    Keep Alive Memory Test Failure
    Knock Control CPU Malfunction
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P2109(00) [0x210900]
    Throttle position (TP)or Accelerator pedal position (APP) sensor A - minimum stop performance
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P0505(00) [0x050500]
    Idle speed control (ISC) system - malfunction
    Idle Speed Control System Malfunction
    Status: Test not completed during this operation cycle
    ----------------------------
    P0300(85) [0x030085]
    Random/multiple cylinder(s) - misfire detected
    Random/Multiple Misfire Detected
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P0300(27) [0x030027]
    Random/multiple cylinder(s) - misfire detected
    Random/Multiple Misfire Detected
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P0300(00) [0x030000]
    Random/multiple cylinder(s) - misfire detected
    Random/Multiple Misfire Detected
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P0301(00) [0x030100]
    Cylinder 1 - misfire detected
    Cylinder 1 Misfire Detected
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P0302(00) [0x030200]
    Cylinder 2 - misfire detected
    Cylinder 2 Misfire Detected
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P0303(00) [0x030300]
    Cylinder 3 - misfire detected
    Cylinder 3 Misfire Detected
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P0304(00) [0x030400]
    Cylinder 4 - misfire detected
    Cylinder 4 Misfire Detected
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P0141(18) [0x014118]
    Heated oxygen sensor (HO2S) 2, bank 1, heater control - circuit malfunction
    Oxygen Sensor Bank 1 Sensor 2 Heater Malfunction
    Status: Test not completed during this operation cycle
    ----------------------------
    P0450(2A) [0x04502A]
    Evaporative emission (EVAP) pressure sensor - circuit malfunction
    Evaporative Control Pressure Sensor Circuit Malfunction
    Status: Test not completed during this operation cycle
    ----------------------------
    P106A(62) [0x106A62]
    Status: Test not completed during this operation cycle
    ----------------------------
    P2610(29) [0x261029]
    Engine control module (ECM) - internal engine off timer performance
    Status: Test not completed during this operation cycle
    ----------------------------
    P0657(9E) [0x06579E]
    Actuator supply voltage - open circuit
    Actuator Supply Voltage Circuit Open
    Status: Test not completed during this operation cycle
    ----------------------------
    P0100(16) [0x010016]
    Mass air flow (MAF) sensor/volume air flow (VAF) sensor - circuit malfunction
    Mass or Volume Air Flow Meter Circuit Malfunction
    Status: Test not completed during this operation cycle
    ----------------------------
    P0100(17) [0x010017]
    Mass air flow (MAF) sensor/volume air flow (VAF) sensor - circuit malfunction
    Mass or Volume Air Flow Meter Circuit Malfunction
    Status: Test not completed during this operation cycle
    ----------------------------
    P0010(13) [0x001013]
    Camshaft position (CMP) actuator, intake/left/front, bank 1 - circuit malfunction
    Camshaft Position Actuator Intake/Left/Front, Bank 1 Circuit Malfunction
    Status: Test not completed during this operation cycle
    ============================
    ABS control unit #2ABS control unit #2
    DTCs: 2
    ----------------------------
    C1404 [0x5404]
    Status: Confirmed
    ----------------------------
    C1416 [0x5416]
    Status: Confirmed
    ============================
    SRS/Airbag #1
    No DTC found.
    ============================
    Motor generatorMotor generator
    DTCs: 15
    ----------------------------
    P1CB7(A2) [0x1CB7A2]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0C3D(1C) [0x0C3D1C]
    DC to DC converter temperature sensor B - circuit malfunction
    Status: Test not completed during this operation cycle
    ----------------------------
    P0E58(1C) [0x0E581C]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0C38(1C) [0x0C381C]
    DC to DC converter temperature sensor A - circuit malfunction
    Status: Test not completed during this operation cycle
    ----------------------------
    P0E00(1F) [0x0E001F]
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P0E04(1F) [0x0E041F]
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P0E08(1F) [0x0E081F]
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P0A00(1C) [0x0A001C]
    Voltage converter coolant temperature sensor - circuit malfunction
    Status: Test not completed during this operation cycle
    ----------------------------
    P0E51(1F) [0x0E511F]
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P1559(1C) [0x15591C]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0AED(1C) [0x0AED1C]
    Drive motor inverter temperature sensor A - circuit malfunction
    Status: Test not completed during this operation cycle
    ----------------------------
    P0BE5(1F) [0x0BE51F]
    Drive motor A, phase U current sensor - circuit malfunction
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P0BE9(1F) [0x0BE91F]
    Drive motor A, phase V current sensor - circuit malfunction
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P0BED(1F) [0x0BED1F]
    Drive motor A, phase W current sensor - circuit malfunction
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P062F(44) [0x062F44]
    Engine control module (ECM), EEPROM error
    Status: Test not completed during this operation cycle
    ============================
    Plug-in ControlPlug-in Control
    DTCs: 47
    ----------------------------
    P0E5E(87) [0x0E5E87]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0E5E(49) [0x0E5E49]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C1F(49) [0x1C1F49]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1CED(1C) [0x1CED1C]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1CF3(1C) [0x1CF31C]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1CF0(1C) [0x1CF01C]
    Status: Test not completed during this operation cycle
    ----------------------------
    P062F(44) [0x062F44]
    Engine control module (ECM), EEPROM error
    Status: Test not completed during this operation cycle
    ----------------------------
    P0D5C(00) [0x0D5C00]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C1B(00) [0x1C1B00]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C1C(00) [0x1C1C00]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1CA4(00) [0x1CA400]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C1D(00) [0x1C1D00]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C1E(00) [0x1C1E00]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C15(16) [0x1C1516]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C15(17) [0x1C1517]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0D3D(16) [0x0D3D16]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0D3D(17) [0x0D3D17]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1CF6(62) [0x1CF662]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0D38(14) [0x0D3814]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0D38(12) [0x0D3812]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0D38(28) [0x0D3828]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0D2A(19) [0x0D2A19]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0D38(9E) [0x0D389E]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C05(14) [0x1C0514]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C05(12) [0x1C0512]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C25(62) [0x1C2562]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C00(14) [0x1C0014]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C00(12) [0x1C0012]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C27(17) [0x1C2717]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C00(9E) [0x1C009E]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C00(16) [0x1C0016]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C0A(14) [0x1C0A14]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C0A(12) [0x1C0A12]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0D4C(14) [0x0D4C14]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0D4C(12) [0x0D4C12]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C26(17) [0x1C2617]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C10(14) [0x1C1014]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C10(12) [0x1C1012]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C28(19) [0x1C2819]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C10(9E) [0x1C109E]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C10(28) [0x1C1028]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1CE9(96) [0x1CE996]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1CE9(31) [0x1CE931]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1CCD(9F) [0x1CCD9F]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1CCD(9E) [0x1CCD9E]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1CCE(1C) [0x1CCE1C]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1CCD(96) [0x1CCD96]
    Status: Test not completed during this operation cycle
    ============================
    HV BatteryHV Battery
    DTCs: 24
    ----------------------------
    P1C85(49) [0x1C8549]
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P3000(00) [0x300000]
    High Voltage Battery Fault; HV Battery Malfunction
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P0C30(00) [0x0C3000]
    Hybrid battery pack - state of charge high
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P31B4(00) [0x31B400]
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P0A81(96) [0x0A8196]
    Hybrid battery pack cooling fan 1 - control circuit open
    Status: Test not completed during this operation cycle
    ----------------------------
    P0A81(11) [0x0A8111]
    Hybrid battery pack cooling fan 1 - control circuit open
    Status: Test not completed during this operation cycle
    ----------------------------
    P0A81(15) [0x0A8115]
    Hybrid battery pack cooling fan 1 - control circuit open
    Status: Test not completed during this operation cycle
    ----------------------------
    P0A96(96) [0x0A9696]
    Hybrid battery pack cooling fan 2 - control circuit open
    Status: Test not completed during this operation cycle
    ----------------------------
    P0A96(11) [0x0A9611]
    Hybrid battery pack cooling fan 2 - control circuit open
    Status: Test not completed during this operation cycle
    ----------------------------
    P0A96(15) [0x0A9615]
    Hybrid battery pack cooling fan 2 - control circuit open
    Status: Test not completed during this operation cycle
    ----------------------------
    P0D0A(11) [0x0D0A11]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0D0A(15) [0x0D0A15]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0E6D(11) [0x0E6D11]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0E6D(15) [0x0E6D15]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0D11(11) [0x0D1111]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0D11(15) [0x0D1115]
    Status: Test not completed during this operation cycle
    ----------------------------
    P33E6(00) [0x33E600]
    Status: Test not completed during this operation cycle
    ----------------------------
    P33E7(00) [0x33E700]
    Status: Test not completed during this operation cycle
    ----------------------------
    P33E8(00) [0x33E800]
    Status: Test not completed during this operation cycle
    ----------------------------
    P33E9(00) [0x33E900]
    Status: Test not completed during this operation cycle
    ----------------------------
    P33EA(00) [0x33EA00]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1B4B(72) [0x1B4B72]
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    U1150(87) [0xD15087] Archive (inactive)
    Status: Pending
    ----------------------------
    U0100(87) [0xC10087] Archive (inactive)
    Data bus, engine control module (ECM) A - no communication
    Status: Pending
    ============================
    Adaptive cruise control
    No DTC found.
    ============================
    Radar cruise control/Pre-collision safety
    No DTC found.
    ============================
    Steering (EMPS/EHPS/PPS)
    No DTC found.
    ============================
    Steering angle
    No DTC found.
    ============================
    Dashboard/Instrument cluster #1
    No DTC found.
    ============================
    Climate/Heater
    No DTC found.
    ============================
    Multimedia/Navigation
    No DTC found.
    ============================
    Electric propulsion controlElectric propulsion control
    DTCs: 32
    ----------------------------
    P0571(13) [0x057113]
    Cruise control/brake switch A - circuit malfunction
    Cruise Control/Brake Switch A Circuit Malfunction
    Status: Test not completed during this operation cycle
    ----------------------------
    P1578(00) [0x157800]
    ETC Power Less Than Demand
    Status: Test not completed during this operation cycle
    ----------------------------
    U0104(87) [0xC10487]
    Data bus, cruise control module - no communication
    Status: Test not completed during this operation cycle
    ----------------------------
    U0122(87) [0xC12287]
    Data bus, vehicle dynamics control module - no communication
    Status: Test not completed during this operation cycle
    ----------------------------
    P1630(81) [0x163081]
    Internal Vref Malfunction
    Traction Control System Malfunction
    Status: Test not completed during this operation cycle
    ----------------------------
    U0293(87) [0xC29387]
    Lost communication with hybrid powertrain control module
    Status: Test not completed during this operation cycle
    ----------------------------
    P1631(81) [0x163181]
    Theft Deterrent Start Enable Signal Not Correct/ Main Relay Malfunction (Power Hold)
    Status: Test not completed during this operation cycle
    ----------------------------
    P0D5E(00) [0x0D5E00]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1CDA(00) [0x1CDA00]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0E61(9E) [0x0E619E]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1CD8(00) [0x1CD800]
    Status: Test not completed during this operation cycle
    ----------------------------
    P308F(49) [0x308F49]
    Status: Test not completed during this operation cycle
    ----------------------------
    P309F(49) [0x309F49]
    Status: Test not completed during this operation cycle
    ----------------------------
    P321D(17) [0x321D17]
    Status: Test not completed during this operation cycle
    ----------------------------
    P320F(00) [0x320F00]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0D07(00) [0x0D0700]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0E6A(73) [0x0E6A73]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0D0E(73) [0x0D0E73]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0D07(73) [0x0D0773]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0C76(00) [0x0C7600]
    Hybrid battery system - discharge time too long
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P0A36(1C) [0x0A361C]
    Generator temperature sensor - circuit malfunction
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C29(79) [0x1C2979]
    Status: Test not completed during this operation cycle
    ----------------------------
    P2530(12) [0x253012]
    Ignition switch, ON position - circuit malfunction
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C6C(9F) [0x1C6C9F]
    Status: Test not completed during this operation cycle
    ----------------------------
    P1C6A(9F) [0x1C6A9F]
    Status: Test not completed during this operation cycle
    ----------------------------
    P2600(96) [0x260096]
    Engine coolant pump motor - open circuit
    Status: Test not completed during this operation cycle
    ----------------------------
    P0A2A(1C) [0x0A2A1C]
    Drive motor A temperature sensor - circuit open
    Status: Test not completed during this operation cycle
    ----------------------------
    P0AA0(00) [0x0AA000]
    Hybrid battery positive contactor - circuit malfunction
    Status: Test not completed during this operation cycle
    ----------------------------
    P0AA3(73) [0x0AA373]
    Hybrid battery positive contactor - circuit malfunction
    Status: Test not completed during this operation cycle
    ----------------------------
    P0AA0(73) [0x0AA073]
    Hybrid battery positive contactor - circuit malfunction
    Status: Test not completed since last DTC clear, Test not completed during this operation cycle
    ----------------------------
    P274A(1C) [0x274A1C]
    Status: Test not completed during this operation cycle
    ----------------------------
    P0D4C(1C) [0x0D4C1C]
    Status: Test not completed during this operation cycle
    ============================
    LKA/LDA
    No DTC found.
    ============================
    Front radar sensor
    No DTC found.
    ============================
    TPMSTPMS
    DTCs: 4
    ----------------------------
    C2121 [0x6121]
    Tire pressure sensor ID1 not received
    Status: Confirmed
    ----------------------------
    C2122 [0x6122]
    Tire pressure sensor ID2 not received
    Status: Confirmed
    ----------------------------
    C2123 [0x6123]
    Tire pressure sensor ID3 not received
    Status: Confirmed
    ----------------------------
    C2124 [0x6124]
    Tire pressure sensor ID4 not received
    Status: Confirmed
    ============================
    BCM #1/Convenience systems
    No DTC found.
    ============================
    Occupant detection
    No DTC found.
    ============================
    Central gateway
    No DTC found.
    ============================
    Single-lens camera sensor
    No DTC found.
    ============================
    Adaptive Front light System (AFS)
    No DTC found.
    ============================
    LKA/LDA #2
    No DTC found.
    ============================
    Electric window/Driver door
    No DTC found.
    ============================
    Electric window/Passenger door
    No DTC found.
    ============================
    Electric window/Rear right door
    No DTC found.
    ============================
    Electric window/Rear left door
    No DTC found.
    ============================
    Rain sensorRain sensor
    DTCs: 1
    ----------------------------
    P000C [0x000C]
    Intake camshaft position A, bank 2 - slow response
    Status: Confirmed
    ============================
    Entry & start / Smart key
    No DTC found.
    ============================
    Power source control
    No DTC found.
    ============================
    Grill shutters
    No DTC found.
    ============================
    Electric windows main switch/control
    No DTC found.
    ============================
    Special vehicle assist
    No DTC found.
     
  2. BiomedO1

    BiomedO1 Senior Member

    Joined:
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    Location:
    SacTown, Ca
    Vehicle:
    2021 Prius Prime
    Model:
    LE
    DTC's don't mean anything if your very low 12V battery is starving-out all your ECUs and sensors. You'll just be chasing ghosts. The first paragraph in the diagnostic manual states: Check 12V battery condition!!

    1. Go to harbor freight or walmart and get a cheap DVM (digital volt meter). Buy a cheap jump pack while your at it.
    2. Pull your battery and get it recharged and tested - if it's bad replace it.
    3. Don't leave your car plugged-in after it's finished charging; you can unplug it when it's convenient for you - just don't leave it plugged - in for days or weeks at a time. That's a sure way of killing your battery.
    4. Check for parasitic battery drain - You take your car to the dealership for their $400 diagnostic fee. Their just going to change the battery and bill you for it. If you come back later on; they'll hit you with another $400 diagnostic fee - but they may actually do a parasitic battery drain test this time. Win-Win for the dealership; unfortunately your pockets will be a lot lighter - who needs money anyways....

    Just my 2-cents.....
     
  3. FlyMode

    FlyMode Junior Member

    Joined:
    Apr 22, 2023
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    Location:
    GTA
    Vehicle:
    2018 Prius Prime
    Model:
    Prime Premium

    The battery is almost brand new! My voltage meter is showing normal readings but I definitely leave the car plugged in much longer than I need to. Sometimes for the weekend if I'm not driving so maybe that's the issue. It is on a timer though 1900-0700 daily
     
  4. kiwiscoot

    kiwiscoot Junior Member

    Joined:
    Jul 4, 2014
    39
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    Location:
    Christchurch New Zealand
    Vehicle:
    2019 Prius Prime
    Model:
    Five
    Don't bargain on your new 12V battery as it could be well stuffed after 12 months. A number of low discharges (as your symptoms seem to suggest) and it's toast.
    What is your normal readings?

    I would suggest put an intelligent battery charger on it overnight and then drive it for a few days and repeat the cycle (charge n drive) for a number of weeks or so. My guess you will find the Christmas effect doesn't occur.
     
  5. BiomedO1

    BiomedO1 Senior Member

    Joined:
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    SacTown, Ca
    Vehicle:
    2021 Prius Prime
    Model:
    LE
    what do you consider normal readings? did you put a load resistor or battery test box on it? I've seen many batteries that have good voltage, but as soon as you place a load across it - Christmas tree effect. That's a bad battery. All those YouTube videos on how to rehab your car battery - same thing! You'll get voltage, but hardly any cranking amps.

    Details matter....

    Take the battery back to wherever you bought it. Have them test it.
     
    #5 BiomedO1, Nov 18, 2024 at 3:12 PM
    Last edited: Nov 18, 2024 at 3:19 PM
  6. FlyMode

    FlyMode Junior Member

    Joined:
    Apr 22, 2023
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    Location:
    GTA
    Vehicle:
    2018 Prius Prime
    Model:
    Prime Premium

    The battery was at 12.5v just after driving earlier today when I last checked it which I think is probably a bit low? I feel like it should have been more like 12.8 , I trickle charged it for 4-5 hours and resting at 13.4 now. I'll check again in the morning.

    Definitely going to invest in a smart trickle charger and use it every week or so like suggested
     
  7. Mr.Vanvandenburg

    Mr.Vanvandenburg Senior Member

    Joined:
    Mar 15, 2007
    1,240
    465
    0
    Vehicle:
    2020 Prius Prime
    Model:
    Limited
    I bought yet another trickle charger. The power of sale price. Schumacher 3 in 1, 2 amp from Amazon, less than $20 with coupon. SPR1627
     
    #7 Mr.Vanvandenburg, Nov 19, 2024 at 10:18 AM
    Last edited: Nov 19, 2024 at 1:48 PM
  8. BiomedO1

    BiomedO1 Senior Member

    Joined:
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    Location:
    SacTown, Ca
    Vehicle:
    2021 Prius Prime
    Model:
    LE
    I haven't had to resort to a trickle charger, yet. Did my annual battery maintenance, last month and found it at 11.9V. A couple of hours @6A on the charger brought it back up. Still on original OEM battery. I'm going to have to start unplugging the car, since I retired a few months back. I believe this is only the 3 time I had to put a charger on the battery. I do quarterly or biannual 12V battery checks and never had a battery issue or no start condition. When I was working, I usually burn down the traction battery daily and the car was plugged-in whenever it was on my drive way. I'm going to have to adjust my behavior now.:(:oops::sleep::unsure:

    Hope this helps....
     
    #8 BiomedO1, Nov 19, 2024 at 1:05 PM
    Last edited: Nov 19, 2024 at 6:45 PM
  9. kiwiscoot

    kiwiscoot Junior Member

    Joined:
    Jul 4, 2014
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    0
    Location:
    Christchurch New Zealand
    Vehicle:
    2019 Prius Prime
    Model:
    Five