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Home >> Toyota >> 2021 >> Mirai Limited >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System - Diagnostic Codes (18 Of 18) & Circuit Tests (1 Of 3) >> Hybrid Control System >> DTC P31DB-9E: AC Inverter Drive Signal Stuck On [11/2020 - 12/2022] >> DTC Summary

DTC Summary

  1. MALFUNCTION DESCRIPTION 

    A malfunction is detected where the EV control ECU cannot shut down the operation of the voltage inverter.

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

    Wire harness malfunction 

    • Wire harness between the voltage inverter and EV control ECU

    EV control ECU malfunction 

    • EV control ECU internal malfunction

    voltage inverter malfunction 

    • Voltage inverter internal malfunction