Home >> Lexus >> 2021 >> LS 500 Base, AWD >> Repair and Diagnosis (Single Page) >> Transmission >> Transmission Control Systems >> Electronic A/T Shift Lever System (Aga0F) - Diagnostic Codes (5 Of 5), Circuit & Symptom Tests (1 Of 2) >> Electronic Shift Lever System >> DTC U0103-87: Lost Communication with Gear Shift Control Module "A" Missing Message [12/2017 - 10/2020] >> Typical Enabling Conditions