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Home >> Lexus >> 2024 >> TX 350 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 20 (Hybrid Battery System - Diagnostic Codes (5 Of 5) & Symptom Tests) >> HYBRID BATTERY SYSTEM (for PHEV Model) >> DTC P3000-4B: Hybrid/EV Battery Control System Over Temperature [12/2023 - ] >> Procedure

DTC P3000-4B: Hybrid/EV Battery Control System Over Temperature [12/2023 - ]: Procedure

WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL) 

    Pre-procedure1

    1. None.

      Procedure1

    2. Check for DTCs.

      Powertrain > HV Battery > Trouble Codes 

      Powertrain > Hybrid Control > Trouble Codes 

      Result

      Result Proceed to
      "P3000-4B" only is output, or DTCs except the ones in the table below are also output. A
      DTCs of hybrid battery system in the table below are output. B
      DTCs of hybrid control system in the table below are output. C
      System Relevant DTC
      Hybrid battery system P060A-47 Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
      P060B-49 Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
      P0606-87 Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
      P0A9B-11 Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Ground
      P0A9B-15 Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Auxiliary Battery or Open
      P0A9B-1C Hybrid/EV Battery Temperature Sensor "A" Voltage Out of Range
      P0A9B-2A Hybrid/EV Battery Temperature Sensor "A" Signal Stuck In Range
      P0AAC-11 Hybrid/EV Battery Air Temperature Sensor "A" Circuit Short to Ground
      P0AAC-15 Hybrid/EV Battery Air Temperature Sensor "A" Circuit Short to Auxiliary Battery or Open
      P0AB1-11 Hybrid/EV Battery Air Temperature Sensor "B" Circuit Short to Ground
      P0AB1-15 Hybrid/EV Battery Air Temperature Sensor "B" Circuit Short to Auxiliary Battery or Open
      P0AC5-11 Hybrid/EV Battery Temperature Sensor "B" Circuit Short to Ground
      P0AC5-15 Hybrid/EV Battery Temperature Sensor "B" Circuit Short to Auxiliary Battery or Open
      P0AC5-1C Hybrid/EV Battery Temperature Sensor "B" Voltage Out of Range
      P0AC5-2A Hybrid/EV Battery Temperature Sensor "B" Signal Stuck In Range
      P0ACA-11 Hybrid/EV Battery Temperature Sensor "C" Circuit Short to Ground
      P0ACA-15 Hybrid/EV Battery Temperature Sensor "C" Circuit Short to Auxiliary Battery or Open
      P0ACA-1C Hybrid/EV Battery Temperature Sensor "C" Voltage Out of Range
      P0ACA-2A Hybrid/EV Battery Temperature Sensor "C" Signal Stuck In Range
      P0AE8-11 Hybrid/EV Battery Temperature Sensor "D" Circuit Short to Ground
      P0AE8-15 Hybrid/EV Battery Temperature Sensor "D" Circuit Short to Auxiliary Battery or Open
      P0AE8-1C Hybrid/EV Battery Temperature Sensor "D" Voltage Out of Range
      P0AE8-2A Hybrid/EV Battery Temperature Sensor "D" Signal Stuck In Range
      P0BC2-11 Hybrid/EV Battery Temperature Sensor "E" Circuit Short to Ground
      P0BC2-15 Hybrid/EV Battery Temperature Sensor "E" Circuit Short to Auxiliary Battery or Open
      P0BC2-1C Hybrid/EV Battery Temperature Sensor "E" Voltage Out of Range
      P0BC2-2A Hybrid/EV Battery Temperature Sensor "E" Signal Stuck In Range
      P0C33-11 Hybrid/EV Battery Temperature Sensor "F" Circuit Short to Ground
      P0C33-15 Hybrid/EV Battery Temperature Sensor "F" Circuit Short to Auxiliary Battery or Open
      P0C33-1C Hybrid/EV Battery Temperature Sensor "F" Voltage Out of Range
      P0C33-2A Hybrid/EV Battery Temperature Sensor "F" Signal Stuck In Range
      P0C7C-11 Hybrid/EV Battery Temperature Sensor "G" Circuit Short to Ground
      P0C7C-15 Hybrid/EV Battery Temperature Sensor "G" Circuit Short to Auxiliary Battery or Open
      P0C7C-1C Hybrid/EV Battery Temperature Sensor "G" Voltage Out of Range
      P0C7C-2A Hybrid/EV Battery Temperature Sensor "G" Signal Stuck In Range
      P0C81-11 Hybrid/EV Battery Temperature Sensor "H" Circuit Short to Ground
      P0C81-15 Hybrid/EV Battery Temperature Sensor "H" Circuit Short to Auxiliary Battery or Open
      P0C81-1C Hybrid/EV Battery Temperature Sensor "H" Voltage Out of Range
      P0C81-2A Hybrid/EV Battery Temperature Sensor "H" Signal Stuck In Range
      P0C88-11 Hybrid/EV Battery Temperature Sensor "I" Circuit Short to Ground
      P0C88-15 Hybrid/EV Battery Temperature Sensor "I" Circuit Short to Auxiliary Battery or Open
      P0C88-1C Hybrid/EV Battery Temperature Sensor "I" Voltage Out of Range
      P0C88-2A Hybrid/EV Battery Temperature Sensor "I" Signal Stuck In Range
      Hybrid battery system P0C8D-11 Hybrid/EV Battery Temperature Sensor "J" Circuit Short to Ground
      P0C8D-15 Hybrid/EV Battery Temperature Sensor "J" Circuit Short to Auxiliary Battery or Open
      P0C8D-1C Hybrid/EV Battery Temperature Sensor "J" Voltage Out of Range
      P0C8D-2A Hybrid/EV Battery Temperature Sensor "J" Signal Stuck In Range
      P0C92-11 Hybrid/EV Battery Temperature Sensor "K" Circuit Short to Ground
      P0C92-15 Hybrid/EV Battery Temperature Sensor "K" Circuit Short to Auxiliary Battery or Open
      P0C92-1C Hybrid/EV Battery Temperature Sensor "K" Voltage Out of Range
      P0C92-2A Hybrid/EV Battery Temperature Sensor "K" Signal Stuck In Range
      P0C97-11 Hybrid/EV Battery Temperature Sensor "L" Circuit Short to Ground
      P0C97-15 Hybrid/EV Battery Temperature Sensor "L" Circuit Short to Auxiliary Battery or Open
      P0C97-1C Hybrid/EV Battery Temperature Sensor "L" Voltage Out of Range
      P0C97-2A Hybrid/EV Battery Temperature Sensor "L" Signal Stuck In Range
      P0CA8-11 Hybrid/EV Battery Temperature Sensor "M" Circuit Short to Ground
      P0CA8-15 Hybrid/EV Battery Temperature Sensor "M" Circuit Short to Auxiliary Battery or Open
      P0CA8-1C Hybrid/EV Battery Temperature Sensor "M" Voltage Out of Range
      P0CA8-2A Hybrid/EV Battery Temperature Sensor "M" Signal Stuck In Range
      P0CAD-11 Hybrid/EV Battery Temperature Sensor "N" Circuit Short to Ground
      P0CAD-15 Hybrid/EV Battery Temperature Sensor "N" Circuit Short to Auxiliary Battery or Open
      P0CAD-1C Hybrid/EV Battery Temperature Sensor "N" Voltage Out of Range
      P0CAD-2A Hybrid/EV Battery Temperature Sensor "N" Signal Stuck In Range
      P0CB2-11 Hybrid/EV Battery Temperature Sensor "O" Circuit Short to Ground
      P0CB2-15 Hybrid/EV Battery Temperature Sensor "O" Circuit Short to Auxiliary Battery or Open
      P0CB2-1C Hybrid/EV Battery Temperature Sensor "O" Voltage Out of Range
      P0CB2-2A Hybrid/EV Battery Temperature Sensor "O" Signal Stuck In Range
      P0CB7-11 Hybrid/EV Battery Temperature Sensor "P" Circuit Short to Ground
      P0CB7-15 Hybrid/EV Battery Temperature Sensor "P" Circuit Short to Auxiliary Battery or Open
      P0CB7-1C Hybrid/EV Battery Temperature Sensor "P" Circuit Voltage Out of Range
      P0CB7-2A Hybrid/EV Battery Temperature Sensor "P" Signal Stuck In Range
      P1B5B-11 Hybrid/EV Battery Temperature Sensor "Q" Circuit Short to Ground
      P1B5B-15 Hybrid/EV Battery Temperature Sensor "Q" Circuit Short to Auxiliary Battery or Open
      P1B5B-1C Hybrid/EV Battery Temperature Sensor "Q" Circuit Voltage Out of Range
      P1B5B-2A Hybrid/EV Battery Temperature Sensor "Q" Signal Stuck In Range
      P1B60-11 Hybrid/EV Battery Temperature Sensor "R" Circuit Short to Ground
      P1B60-15 Hybrid/EV Battery Temperature Sensor "R" Circuit Short to Auxiliary Battery or Open
      P1B60-1C Hybrid/EV Battery Temperature Sensor "R" Circuit Voltage Out of Range
      P1B60-2A Hybrid/EV Battery Temperature Sensor "R" Signal Stuck In Range
      P1B65-11 Hybrid/EV Battery Temperature Sensor "S" Circuit Short to Ground
      P1B65-15 Hybrid/EV Battery Temperature Sensor "S" Circuit Short to Auxiliary Battery or Open
      P1B65-1C Hybrid/EV Battery Temperature Sensor "S" Circuit Voltage Out of Range
      P1B65-2A Hybrid/EV Battery Temperature Sensor "S" Signal Stuck In Range
      P1B6A-11 Hybrid/EV Battery Temperature Sensor "T" Circuit Short to Ground
      P1B6A-15 Hybrid/EV Battery Temperature Sensor "T" Circuit Short to Auxiliary Battery or Open
      P1B6A-1C Hybrid/EV Battery Temperature Sensor "T" Circuit Voltage Out of Range
      P1B6A-2A Hybrid/EV Battery Temperature Sensor "T" Signal Stuck In Range
      P3065-62 Hybrid/EV Battery Temperature Sensor "Group 1" Signal Compare Failure
      P306A-62 Hybrid/EV Battery Temperature Sensor "Group 2" Signal Compare Failure
      P306B-62 Hybrid/EV Battery Temperature Sensor "Group 3" Signal Compare Failure
      P306F-62 Hybrid/EV Battery Temperature Sensor "Group 4" Signal Compare Failure
      Hybrid control system P0A1F-94 Hybrid/EV Battery Energy Control Module Unexpected Operation

      Post-procedure1

    3. Turn the ignition switch off.

    Result: 

    B 

    GO TO DTC CHART (HYBRID BATTERY SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2023 - ] 

    Result: 

    C 

    GO TO DTC CHART (HYBRID CONTROL SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2023 - ] 

    Result: 

    A 

    See step  2

  2. REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY 

    HINT: 

    Refer to REMOVAL [12/2023 - ]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    REPLACE HV SUPPLY STACK SUB-ASSEMBLY (NO. 1 THROUGH NO. 4). Refer to  REMOVAL [12/2023 - ] 

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