Home › Subaru › 2020 › BRZ Limited, Automatic Trans › Repair and Diagnosis › Transmission › Automatic Trans › Automatic Transaxle (Diagnostics) › Automatic Transmission System › DTC U0073: Control Module Communication Bus "A" Off; DTC U0401: Invalid Data Received From ECM/PCM "A"; DTC U0416: Invalid Data Received From Vehicle Dynamics Control Module; DTC U0422: Invalid Data Received From Body Control Module; DTC U0423: Invalid Data Received From Instrument Panel Cluster Control Module › Circuit description › Monitor Strategy