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Home >> Lexus >> 2024 >> TX 350 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 99 (Plug-In Charge Control System - Diagnostic Codes (2 Of 3)) >> PLUG-IN CHARGE CONTROL SYSTEM (for PHEV Model) >> DTC P1BF8-62: Hybrid/EV Battery Charger Coupler Temperature Sensor "A"/"B" Signal Compare Failure [12/2023 - ] >> DTC Summary

DTC Summary

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. MALFUNCTION DESCRIPTION 

    These DTCs are stored when the temperature difference between the inlet AC charging temperature sensor 1 (positive side) and the inlet AC charging temperature sensor 2 (negative side) is more than a certain amount.

    When this DTC is stored, plug-in charging stops.

    The cause of this malfunction may be one of the following:

    Charge control ECU (Electric vehicle charger assembly) malfunction 

    • Charge control ECU (Electric vehicle charger assembly) internal malfunction

    Inlet AC charger cable (Charging inlet) malfunction 

    • Internal inlet AC charging temperature sensor 1 (positive side) or inlet AC charging temperature sensor 2 (negative side) malfunction
    • Open or short in inlet AC charging temperature sensor 1 (positive side) or inlet AC charging temperature sensor 2 (negative side)
    • The connectors are not connected properly

    Wire harness between the inlet AC charging temperature sensor 1 (positive side) and charge control ECU (Electric vehicle charger assembly) 

    • The connectors are not connected properly
    • Foreign matter or water on the connector terminals
    • Open or short in wire harness
  2. INSPECTION DESCRIPTION 
    GTY1204506Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    System Diagram Range Inspection Content Reason
    *a Check whether the AC charger inlet cable connector is connected Improperly connected AC charger inlet cable connector
    *b Check whether the electric vehicle charger assembly connector is connected Improperly connected electric vehicle charger assembly connector
    *c Inspect the AC charger inlet cable
    - Inlet AC charging temperature sensor 1 (positive side)
    - Inlet AC charging temperature sensor 2 (negative side)
    • Open or short circuit in the AC charger inlet cable
    • Open or short circuit in the AC charger inlet cable
    *d Check for an open or short in the wire harness Open or short circuit in wire harness
    *e Replace electric vehicle charger assembly Electric vehicle charger assembly internal malfunction
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