LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2013 >> GS 450h >> Repair and Diagnosis (Single Page) >> Electrical >> Gauges >> Meter / Gauge / Display (Diagnostic Codes & Symptom Tests) >> Meter / Gauge System >> DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0151: Lost Communication with Restraints Control Module >> Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0151: Lost Communication with Restraints Control Module: Description

The combination meter assembly communicates with the ECM via the CAN communication system.

DTC Code DTC Detection Condition Trouble Area
U0100 Both conditions are met:
  • IG voltage is 10.5 V or higher.
  • No communication with the ECM continues for 2 seconds or more.
  • ECM
  • CAN communication system
  • Combination meter assembly
U0129 Both conditions are met:
  • IG voltage is 10.5 V or higher.
  • No communication with the skid control ECU assembly continues for 3 seconds or more.
  • Skid control ECU assembly
  • CAN communication system
  • Combination meter assembly
U0131 Both conditions are met:
  • IG voltage is 10.5 V or higher.
  • No communication with the power steering ECU continues for 3 seconds or more.
  • Power steering ECU assembly
  • CAN communication system
  • Combination meter assembly
U0142 Both conditions are met:
  • IG voltage is 10.5 V or higher.
  • No communication with the main body ECU continues for 3 seconds or more.
  • Main body ECU (multiplex network body ECU)
  • CAN communication system
  • Combination meter assembly
U0151 Both conditions are met:
  • IG voltage is 10.5 V or higher.
  • No communication with the center airbag sensor assembly continues for 10 seconds or more.
  • Center airbag sensor assembly
  • CAN communication system
  • Combination meter assembly