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Home >> Lexus >> 2018 >> ES 300h >> Repair and Diagnosis (Single Page) >> Steering >> Manual Steering >> Power Steering System (Diagnostic Codes & Circuit Tests) >> Power Steering System >> DTC U0129: Lost Communication with Brake System Control Module; DTC U0293: Lost Communication with Hybrid Control Module; DTC U1104: Lost Communication with Driving Support ECU [07/2015 - ] >> Description
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DTC U0129: Lost Communication with Brake System Control Module; DTC U0293: Lost Communication with Hybrid Control Module; DTC U1104: Lost Communication with Driving Support ECU [07/2015 - ]: Description

The power steering ECU assembly receives signals from the skid control ECU (brake booster with master cylinder assembly), hybrid vehicle control ECU assembly and forward recognition camera (w/ Front Recognition Camera System) via the CAN communication system.

DTC No. DTC Detection Condition Trouble Area
U0129 Lost communication with skid control ECU
  • CAN communication system
  • Skid control ECU (Brake booster with master cylinder assembly)
U0293 Lost communication with hybrid vehicle control ECU assembly
  • CAN communication system
  • Hybrid vehicle control ECU assembly
U1104* Lost communication with forward recognition camera
  • CAN communication system
  • Forward recognition camera

*: w/ Front Recognition Camera System

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