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Home >> Lexus >> 2011 >> LX 570 >> Repair and Diagnosis (Single Page) >> Steering >> Steering Gear >> Variable Gear Ratio Steering System (Diagnostic Codes & Symptom Tests) >> Variable Gear Ratio Steering System >> DTC U0100/56: Lost Communication with ECM / PCM "A"; DTC U0122/56: Lost Communication with Vehicle Dynamics Control Module; DTC U0126/56: Lost Communication with Steering Angle Sensor Module (08/2010 - 08/2011) >> Description
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DTC U0100/56: Lost Communication with ECM / PCM "A"; DTC U0122/56: Lost Communication with Vehicle Dynamics Control Module; DTC U0126/56: Lost Communication with Steering Angle Sensor Module (08/2010 - 08/2011): Description

The steering control ECU receives signals from the skid control ECU, ECM and steering angle sensor via CAN communication. When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system first.

DTC Code DTC Detection Condition Trouble Area
U0100/56 The steering control ECU detects an error in reception (from ECM) via CAN communication.
  • CAN communication system
  • ECM
U0122/56 The steering control ECU detects an error in reception (from skid control ECU) via CAN communication.
  • CAN communication system
  • Skid control ECU
U0126/56 The steering control ECU detects an error in reception (from steering angle sensor) via CAN communication.
  • CAN communication system
  • Steering angle sensor