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Home >> Lexus >> 2021 >> LC 500h >> Repair and Diagnosis (Single Page) >> Transmission >> Transmission Control Systems >> Electronic A/T Shift Lever System - Diagnostic Codes (4 Of 4), Symptom & Circuit Tests >> Electronic Shift Lever System >> DTC U0103-87: Lost Communication with Gear Shift Control Module "A" (Hybrid/EV Battery Local Bus) Missing Message [01/2017 - 05/2023] >> Description

DTC U0103-87: Lost Communication with Gear Shift Control Module "A" (Hybrid/EV Battery Local Bus) Missing Message [01/2017 - 05/2023]: Description

The shift control ECU transmits and receives signals via CAN communication to and from the hybrid vehicle control ECU.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate
U0103-87 Lost Communication with Gear Shift Control Module "A" (Hybrid/EV Battery Local Bus) Missing Message 3 seconds elapse after turning power switch on (IG) with battery voltage 10 V or higher and a CAN communication malfunction (battery local bus) between hybrid vehicle control ECU occurs continuously for 1 second or more.
(1 trip detection logic)
  • Hybrid vehicle control ECU
  • Shift control ECU
  • Wire harness or connector
  • Master Warning Light
    • Comes on
  • Multi-information Display Error Message
    • Displayed