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Home >> Lexus >> 2018 >> RX 450h Base >> 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 U023A: Lost Communication with Front Camera Module; DTC U0293: Lost Communication with Hybrid Control Module [10/2015 - ] >> Description
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DTC U0129: Lost Communication with Brake System Control Module; DTC U023A: Lost Communication with Front Camera Module; DTC U0293: Lost Communication with Hybrid Control Module [10/2015 - ]: Description

The power steering ECU assembly receives signals from the hybrid vehicle control ECU assembly, skid control ECU assembly and forward recognition camera (w/ Forward Recognition Camera) via CAN communication.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition Note
U0129 Lost Communication with Brake System Control Module Lost communication with skid control ECU assembly
  • CAN communication system
  • Skid control ECU assembly
 EPS warning light: Comes on The ECU judges the system has returned to normal or the power switch is turned on (IG) again -
U023A Lost Communication with Front Camera Module Lost communication with forward recognition camera
  • CAN communication system
  • Forward recognition camera
 EPS warning light: Comes on The ECU judges the system has returned to normal or the power switch is turned on (IG) again w/ Forward Recognition Camera
U0293 Lost Communication with Hybrid Control Module Lost communication with hybrid vehicle control ECU assembly
  • CAN communication system
  • Hybrid vehicle control ECU assembly
 EPS warning light: Does not come on The ECU judges the system has returned to normal or the power switch is turned on (IG) again -
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