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Home >> Lexus >> 2020 >> UX 200 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 61 (Motor Generator Control System (Diagnostic Codes) (2 Of 3)) >> Motor Generator Control System >> DTC P0A94-9E: DC/DC Converter Stuck On; DTC P0D3319: DC/DC Converter Circuit Current Above Threshold [10/2018 - ] >> DTC Summary

DTC Summary

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  1. MALFUNCTION DESCRIPTION 

    This DTC indicates that a large current flowed in the boost converter. 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 or generator coils
    • Motor (MG2) or generator (MG1) internal malfunction (iron particles or damage from foreign objects)
    Resolver Open or short circuit in the motor resolver or generator resolver
    Inverter 
    • Inverter internal circuit malfunction
    • Malfunction in ECU that controls the inverter
    • Malfunction in sensor for inverter control (current sensor, VH sensor, VL sensor)
    Inverter cooling system
    • Inverter water pump assembly malfunction
    • Coolant leak
    • Frozen
    • Blockage