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Home >> Subaru >> 2013 >> BRZ Premium, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 26 (Entry Start System Start System (Keyless Start)) >> Entry & Start System (Start Function) >> DTC U0073: Control Module Communication Bus "A" Off; DTC U0100: Lost Communication With ECM/PCM "A"; DTC U0101: Lost Communication With TCM; DTC U0122: Lost Communication With Vehicle Dynamics Control Module; DTC U0140: Lost Communication With Body Control Module; DTC U0155: Lost Communication With Instrument Panel Cluster (IPC) Control Module; DTC U0401: Invalid Data Received From ECM/PCM "A"; DTC U0422: Invalid Data Received From Body Control Module >> Inspection steps

Inspection steps

WARNING: This page is about a different car, the 2018 Subaru BRZ. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
  • After repair, perform the [DTC output confirmation operation], and check that the DTC is not output again.
  1. DTC check
    1. Record the output DTC. (Refer to DTC CHECK/CLEAR )

      Go to "CAN communication system (How to troubleshoot)" (Refer to HOW TO TROUBLESHOOT )

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