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Home >> Lexus >> 2023 >> LX 600 Base >> Repair and Diagnosis (Single Page) >> Steering >> Manual Steering >> Power Steering System - Diagnostic Codes & Circuit Tests >> Power Steering System >> DTC U0100-00: Lost Communication with ECM/PCM "A" (System 2) Missing Message; DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0129-00: Lost Communication with Brake System Control Module (System 2) Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module Missing Message; DTC U023A-00: Lost Communication with Image Processing Module (System 2) Missing Message; DTC U023A-87: Lost Communication with Image Processing Module "A" Missing Message [12/2021 - ] >> Description
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DTC U0100-00: Lost Communication with ECM/PCM "A" (System 2) Missing Message; DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0129-00: Lost Communication with Brake System Control Module (System 2) Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module Missing Message; DTC U023A-00: Lost Communication with Image Processing Module (System 2) Missing Message; DTC U023A-87: Lost Communication with Image Processing Module "A" Missing Message [12/2021 - ]: Description

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate DTC Output from Priority
U0100-00 Lost Communication with ECM/PCM "A" (System 2) Missing Message Lost communication with ECM
  • ECM
  • CAN communication system
  • Rack and pinion power steering gear assembly
 EPS warning light: Does not come on EMPS B
U0100-87 Lost Communication with ECM/PCM "A" Missing Message Lost communication with ECM
  • ECM
  • CAN communication system
  • Rack and pinion power steering gear assembly
 EPS warning light: Does not come on EMPS B
U0129-00 Lost Communication with Brake System Control Module (System 2) Missing Message Lost communication with No. 2 skid control ECU (brake actuator assembly)
  • No. 2 Skid control ECU (brake actuator assembly)
  • CAN communication system
  • Rack and pinion power steering gear assembly
 EPS warning light: Comes on EMPS B
U0129-87 Lost Communication with Brake System Control Module Missing Message Lost communication with No. 2 skid control ECU (brake actuator assembly)
  • No. 2 Skid control ECU (brake actuator assembly)
  • CAN communication system
  • Rack and pinion power steering gear assembly
 EPS warning light: Comes on EMPS B
U023A-00 Lost Communication with Image Processing Module (System 2) Missing Message Lost communication with forward recognition camera
  • Forward recognition camera
  • CAN communication system
  • Rack and pinion power steering gear assembly
 EPS warning light: Does not come on EMPS B
U023A-87 Lost Communication with Image Processing Module "A" Missing Message Lost communication with forward recognition camera
  • Forward recognition camera
  • CAN communication system
  • Rack and pinion power steering gear assembly
 EPS warning light: Does not come on EMPS B
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