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Home >> Lexus >> 2017 >> NX 200t Base, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Exterior Lights >> Lighting System (Triple Beam Headlight) - Diagnostic Codes & Symptom Tests >> LIGHTING SYSTEM (For Triple Beam Headlight) >> DTC U0101: Lost Communication with TCM; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0155: Lost Communication with Instrument Panel Cluster (IPC) Control Module [10/2014 - 09/2017] >> Description
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DTC U0101: Lost Communication with TCM; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0155: Lost Communication with Instrument Panel Cluster (IPC) Control Module [10/2014 - 09/2017]: Description

These DTCs are stored when the CAN communication system is malfunctioning.

DTC No. Detection Item DTC Detection Condition Trouble Area
U0101 Lost Communication with TCM
  • 3 seconds or more elapse after turning the engine switch on (IG).
  • The headlight light control ECU sub-assembly LH power supply voltage is 9.5 V or higher.
  • CAN communication system
  • ECM
  • Lane departure warning camera
U0126 Lost Communication with Steering Angle Sensor Module
  • 3 seconds or more elapse after turning the engine switch on (IG).
  • The headlight light control ECU sub-assembly LH power supply voltage is 9.5 V or higher.
  • CAN communication system
  • Power steering ECU assembly
U0129 Lost Communication with Brake System Control Module
  • 3 seconds or more elapse after turning the engine switch on (IG).
  • The headlight light control ECU sub-assembly LH power supply voltage is 9.5 V or higher.
  • CAN communication system
  • Brake actuator assembly (skid control ECU)
U0142 Lost Communication with Body Control Module "B"
  • 3 seconds or more elapse after turning the engine switch on (IG).
  • The headlight light control ECU sub-assembly LH power supply voltage is 9.5 V or higher.
  • CAN communication system
  • Main body ECU (multiplex network body ECU)
U0155 Lost Communication with Instrument Panel Cluster (IPC) Control Module
  • 3 seconds or more elapse after turning the engine switch on (IG).
  • The headlight light control ECU sub-assembly LH power supply voltage is 9.5 V or higher.
  • CAN communication system
  • Combination meter assembly
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