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Home >> Toyota >> 2018 >> 86 Base, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (6 Of 6) >> SFI System >> DTC U0073: Control Module Communication Bus "A" Off; DTC U0101: Lost Communication with TCM; DTC U0122: Lost Communication With Vehicle Dynamics Control Module; DTC U0155: Lost Communication with Instrument Panel Cluster (IPC) Control Module; DTC U0402: Invalid Data Received from TCM; DTC U0416: Invalid Data Received from Vehicle Dynamics Control Module; DTC U0423: Invalid Data Received from Instrument Panel Cluster Control Module [06/2016 - ] >> Description
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DTC U0073: Control Module Communication Bus "A" Off; DTC U0101: Lost Communication with TCM; DTC U0122: Lost Communication With Vehicle Dynamics Control Module; DTC U0155: Lost Communication with Instrument Panel Cluster (IPC) Control Module; DTC U0402: Invalid Data Received from TCM; DTC U0416: Invalid Data Received from Vehicle Dynamics Control Module; DTC U0423: Invalid Data Received from Instrument Panel Cluster Control Module [06/2016 - ]: Description

Refer to CAN communication system for system description (Refer to SYSTEM DESCRIPTION [06/2016 - 03/2017] , or refer to SYSTEM DESCRIPTION [03/2017 - ] ).

DTC No. DTC Detection Conditions Trouble Areas
U0073 Bus off state for 0.436 seconds or more.
(1 trip detection logic)
  • Wire harness (CANL and CANH circuits)
  • ECM
U0101 No communication between ECM and TCM for 0.5 seconds or more.
(1 trip detection logic)
  • Wire harness (CANL and CANH circuits)
  • ECM
  • TCM
U0122 No communication between ECM and skid control ECU for 0.5 seconds or more.
(1 trip detection logic)
  • Wire harness (CANL and CANH circuits)
  • ECM
  • Skid control ECU (Brake actuator assembly)
U0155 No communication between ECM and combination meter assembly for 0.5 seconds or more.
(1 trip detection logic)
  • Wire harness (CANL and CANH circuits)
  • ECM
  • Combination meter assembly
U0402 Invalid data received from TCM for 2 seconds or more.
(1 trip detection logic)
  • Wire harness (CANL and CANH circuits)
  • ECM
  • TCM
U0416 Invalid data received from skid control ECU for 2 seconds or more.
(1 trip detection logic)
  • Wire harness (CANL and CANH circuits)
  • ECM
  • Skid control ECU (Brake actuator assembly)
U0423 Invalid data received from combination meter assembly for 2 seconds or more.
(1 trip detection logic)
  • Wire harness (CANL and CANH circuits)
  • ECM
  • Combination meter assembly