Home › Subaru › 2015 › BRZ Series.Blue, Automatic Trans › Repair and Diagnosis › Transmission › Automatic Trans › Automatic Transmission (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