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Home >> Lexus >> 2013 >> RX 350 Base, AWD >> Repair and Diagnosis (Single Page) >> Steering >> Power Steering >> Power Steering System (Diagnostic Codes & Symptom Tests) >> Power Steering System >> DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module; DTC U1104: Lost Communication with Driving Support ECU (03/2012 - 07/2012) >> Description
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DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module; DTC U1104: Lost Communication with Driving Support ECU (03/2012 - 07/2012): Description

The power steering ECU receives signals from the ECM and the brake actuator assembly (skid control ECU) via the CAN communication system.

DTC No. DTC Detection Condition Trouble Area
U0100 Lost communication with ECM/PCM "A"
  • CAN communication system
  • ECM
U0129 Lost communication with brake system control module
  • CAN communication system
  • Brake actuator assembly (Skid control ECU)
U1104 Lost communication with driving support ECU
  • CAN communication system
  • Driving support ECU
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