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Home >> Lexus >> 2018 >> LC 500h >> Repair and Diagnosis (Single Page) >> Steering >> Manual Steering >> Power Steering System - Diagnostic Codes & Circuit Tests >> Power Steering System >> DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0130: Lost Communication with Steering Effort Control Module; DTC U0134: Lost Communication with DRS Module; DTC U023A: Lost Communication with Front Camera Module; DTC U0293: Lost Communication with Hybrid Control Module [01/2017 - ] >> Description
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DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0130: Lost Communication with Steering Effort Control Module; DTC U0134: Lost Communication with DRS Module; DTC U023A: Lost Communication with Front Camera Module; DTC U0293: Lost Communication with Hybrid Control Module [01/2017 - ]: Description

The power steering ECU (rack and pinion power steering gear assembly) receives signals from the steering sensor, skid control ECU assembly, VGRS ECU (front steering control ECU)*, DRS ECU (rear steering control ECU)*, forward recognition camera, and hybrid vehicle control ECU assembly via CAN communication.

  1. *: w/ Variable Gear Ratio Steering System
DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition Note
U0126 Lost Communication with Steering Angle Sensor Module Lost communication with steering sensor
  • Steering sensor
  • CAN communication system
  • Rack and pinion power steering gear assembly
 EPS warning light: Comes on After the CAN communication returns to normal -
U0129 Lost Communication with Brake System Control Module Lost communication with skid control ECU assembly
  • Skid control ECU assembly
  • CAN communication system
  • Rack and pinion power steering gear assembly
 EPS warning light: Comes on After the CAN communication returns to normal -
U0130 Lost Communication with Steering Effort Control Module Lost communication with VGRS ECU (front steering control ECU)
  • VGRS ECU (front steering control ECU)
  • CAN communication system
  • Rack and pinion power steering gear assembly
 EPS warning light: Comes on After the CAN communication returns to normal -
U0134 Lost Communication with DRS Module Lost communication with DRS ECU (rear steering control ECU)
  • DRS ECU (rear steering control ECU)
  • CAN communication system
  • Rack and pinion power steering gear assembly
 EPS warning light: Does not come on After the CAN communication returns to normal -
U023A Lost Communication with Front Camera Module 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 After the CAN communication returns to normal -
U0293 Lost Communication with Hybrid Control Module Lost communication with hybrid vehicle control ECU assembly
  • Hybrid vehicle control ECU assembly
  • CAN communication system
  • Rack and pinion power steering gear assembly
 EPS warning light: Does not come on After the CAN communication returns to normal -
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