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Home >> Lexus >> 2024 >> RX 500h >> Repair and Diagnosis >> External Pages >> Different car >> Section 145 (Motor Generator Control System - Diagnostic Codes (5 Of 5)) >> MOTOR GENERATOR CONTROL SYSTEM (for THS-HEV Model) >> DTC P3153-1D: DC/DC Converter Current Sensor Circuit Current Out of Range [10/2022 - ] >> DTC Summary

DTC Summary

WARNING: This page is about a different car, the 2025 Lexus RX 350h, 2024 Lexus RX 350h, and 2023 Lexus RX 350h. However, it is still accessible from the selected car via links, so may be relevant.
  1. MALFUNCTION DESCRIPTION 

    This DTC is stored if the value of the reactor current sensor fluctuates excessively. The cause of this malfunction may be one of the following:

    Area Main Malfunction Description
    Hybrid vehicle transaxle assembly
    • Open or short circuit in the motor, generator or rear motor coils
    • Motor (MG2), generator (MG1) or rear motor (MGR) internal malfunction (iron particles or damage from foreign objects)
    Rear traction motor with transaxle assembly
    • Open or short circuit in the rear motor coil
    • Rear motor (MGR) internal malfunction (iron particles or damage from foreign objects)
    Resolver Open or short circuit in the motor resolver, generator resolver or rear motor resolver circuit
    Inverter 
    • Inverter internal circuit malfunction
    • Malfunction in ECU that controls the inverter
    • Malfunction in sensor for inverter control (current sensor, voltage sensors (VH, VL), etc.)
    HV battery high-voltage line circuit Open in an HV floor under wire