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Home >> Lexus >> 2024 >> RC 350 Base, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 22 (Engine Control System (8AR-FTS) - Diagnostic Codes (10 Of 10) & Circuit Tests (1 Of 3)) >> SFI System >> DTC U1104-87: Lost Communication with Driving Support ECU Missing Message [10/2015 - 11/2017] >> Description

DTC U1104-87: Lost Communication with Driving Support ECU Missing Message [10/2015 - 11/2017]: Description

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The ECM and driving support ECU assembly send and receive signals via CAN communication.

If a communication error occurs between the ECM and driving support ECU assembly, the ECM stores this DTC.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
U1104-87 Lost Communication with Driving Support ECU Missing Message There is no communication between the ECM and driving support ECU assembly (1 trip detection logic).
  • CAN communication system
  • Driving support ECU assembly
  • ECM
Does not come on DTC stored SAE Code: U1104