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Home >> Scion >> 2016 >> FR-S Automatic Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P1603-U0073) & Circuit Tests) >> 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 [05/2014 - ] >> 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 [05/2014 - ]: Description

Refer to CAN communication system for system description. Refer to SYSTEM DESCRIPTION [05/2014 - ] .

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