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Home >> Lexus >> 2017 >> CT 200h Base >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System - Diagnostic Codes (1 Of 5) >> Hybrid Control System >> DTC P0A1B-554: Drive Motor "A" Control Module [08/2014 - ] >> Monitor Description

Monitor Description

If excessive amperage flows through the boost converter due to an internal short, the boost converter will transmit a boost converter fail signal to the MG ECU. Upon receiving this information, the power management control ECU (HV CPU) will illuminate the MIL and set a DTC.