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Home >> Subaru >> 2014 >> 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 >> Typical Malfunction Thresholds
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Typical Malfunction Thresholds

TYPICAL MALFUNCTION THRESHOLDS - U0073: CONTROL MODULE COMMUNICATION BUS "A" OFF

CAN controller confirms the bus every 50 milliseconds, then the bus is turned OFF. 1 count or more
U0401: INVALID DATA RECEIVED FROM ECM/PCM "A"

The communication counter does not count up. (Check the communication counter value every 10 milliseconds.) 50 count
U0416: INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULE

The communication counter does not count up. (Check the communication counter value every 10 milliseconds.) 40 count