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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 85 (Hybrid Control System (2WD) - Diagnostic Codes (2 Of 7)) >> HYBRID CONTROL SYSTEM (for 2WD) >> DTC P0A9B-1C: Hybrid/EV Battery Temperature Sensor "A" Voltage Out of Range; DTC P0AC5-1C: Hybrid/EV Battery Temperature Sensor "B" Voltage Out of Range; DTC P0ACA-1C: Hybrid/EV Battery Temperature Sensor "C" Voltage Out of Range; DTC P0AE8-1C: Hybrid/EV Battery Temperature Sensor "D" Voltage Out of Range; DTC P0BC2-1C: Hybrid/EV Battery Temperature Sensor "E" Voltage Out of Range; DTC P0C33-1C: Hybrid/EV Battery Temperature Sensor "F" Voltage Out of Range [12/2019 - 11/2023] >> Procedure

DTC P0A9B-1C: Hybrid/EV Battery Temperature Sensor "A" Voltage Out of Range; DTC P0AC5-1C: Hybrid/EV Battery Temperature Sensor "B" Voltage Out of Range; DTC P0ACA-1C: Hybrid/EV Battery Temperature Sensor "C" Voltage Out of Range; DTC P0AE8-1C: Hybrid/EV Battery Temperature Sensor "D" Voltage Out of Range; DTC P0BC2-1C: Hybrid/EV Battery Temperature Sensor "E" Voltage Out of Range; DTC P0C33-1C: Hybrid/EV Battery Temperature Sensor "F" Voltage Out of Range [12/2019 - 11/2023]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK DTC OUTPUT (HYBRID CONTROL) 
    1. Check for DTCs.

      Powertrain > Hybrid Control > Trouble Codes 

      Result

      Result Proceed to
      P0AFC-00 or P0AFC-96 is not output. A
      P0AFC-00 or P0AFC-96 is also output. B
    2. Turn the ignition switch off.

    Result: 

    B 

    GO TO DTC CHART (HYBRID CONTROL SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2019 - 09/2020]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2020 - 10/2021]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2021 - 11/2023] 

    Result: 

    A 

    See step  2

  2. CHECK INSTALLATION OF TEMPERATURE SENSOR (HYBRID BATTERY TEMPERATURE SENSOR) 

    Refer to PROCEDURE - Step 2

    Result

    Result Proceed to
    Each battery temperature sensor is installed in the correct location with the correct orientation and its claws are engaged securely. A
    Claws are damaged. B
    Any of battery temperature sensors are not installed correctly, but claws are not damaged. C

    Result: 

    B 

    REPLACE HYBRID BATTERY THERMISTOR. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

    Result: 

    C 

    INSTALL PARTS CORRECTLY 

    Result: 

    A 

    See step  3

  3. CHECK HYBRID BATTERY THERMISTOR (BATTERY TEMPERATURE SENSOR) 

    Refer to PROCEDURE - Step 3

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    REPLACE BATTERY VOLTAGE SENSOR. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

    Result: 

    NG 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (BATTERY TEMPERATURE SENSOR) 

    See step  5

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    REPLACE HYBRID BATTERY THERMISTOR. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

    Result: 

    NG 

    REPAIR HARNESS OR CONNECTOR (BATTERY TEMPERATURE SENSOR) 

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