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Home >> Lexus >> 2021 >> LS 500 Base, RWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Can Communication System - Circuit Tests (1 Of 9) & Diagnostic Codes >> Can Communication System >> DTC U0129: Lost Communication with Skid Control ECU [10/2020 - 10/2023] >> Description

DTC U0129: Lost Communication with Skid Control ECU [10/2020 - 10/2023]: Description

DTC No. Detection Item DTC Detection Condition Trouble Area Note
U0129 Lost Communication with Skid Control ECU Communication stop occurs between the skid control ECU assembly and ECU or sensor outputs DTC(s)
  • Skid control ECU assembly (skid control ECU) (w/o Vacuum Brake Booster)
  • Skid control ECU assembly (skid control ECU) CAN branch wire or connector (w/o Vacuum Brake Booster)
  • Brake actuator assembly (skid control ECU) (w/ Vacuum Brake Booster)
  • Brake actuator assembly (skid control ECU) CAN branch wire or connector (w/ Vacuum Brake Booster)
DTC Output from 
  • Front steering control ECU (w/ Variable Gear Ratio Steering System)
  • Rack and pinion power steering gear assembly
  • Rear steering control ECU (w/ Dynamic Rear Steering System)