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Home >> Lexus >> 2022 >> ES 350 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Exterior Lights >> Lighting System (Ext) (Except Hybrid) - Diagnostic Codes (2 Of 2) & Symptom Tests >> LIGHTING SYSTEM (for Gasoline Model) >> DTC U0073: Control Module Communication Bus OFF; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0182: Lost Communication With Lighting Control Module Front [06/2018 - ] >> Description
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DTC U0073: Control Module Communication Bus OFF; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0182: Lost Communication With Lighting Control Module Front [06/2018 - ]: Description

These DTCs are stored if a CAN communication malfunction occurs between the headlight ECU sub-assembly RH and other ECUs.

FOR LED TYPE TURN SIGNAL LIGHT

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from
U0073 Control Module Communication Bus OFF The headlight ECU sub-assembly RH does not send/receive data. CAN communication system AFS (Sub)
U0126 Lost Communication with Steering Angle Sensor Module The headlight ECU sub-assembly RH does not receive data from the steering sensor for approximately 10 seconds or more.
  • CAN communication system
  • Steering sensor
 AFS (Sub)
U0142 Lost Communication with Body Control Module "B" The headlight ECU sub-assembly RH does not receive data from the main body ECU (multiplex network body ECU) for approximately 10 seconds or more.
  • CAN communication system
  • Main body ECU (multiplex network body ECU)
 AFS (Sub)
U0182 Lost Communication With Lighting Control Module Front The headlight ECU sub-assembly RH does not receive data from the headlight ECU sub-assembly LH for approximately 10 seconds or more.
  • CAN communication system
  • Headlight ECU sub-assembly LH
 AFS (Sub)
FOR BULB TYPE TURN SIGNAL LIGHT

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from
U0073 Control Module Communication Bus OFF The headlight ECU sub-assembly RH does not send/receive data. CAN communication system HL AutoLeveling (Sub)
U0126 Lost Communication with Steering Angle Sensor Module The headlight ECU sub-assembly RH does not receive data from the steering sensor for approximately 10 seconds or more.
  • CAN communication system
  • Steering sensor
 HL AutoLeveling (Sub)
U0142 Lost Communication with Body Control Module "B" The headlight ECU sub-assembly RH does not receive data from the main body ECU (multiplex network body ECU) for approximately 10 seconds or more.
  • CAN communication system
  • Main body ECU (multiplex network body ECU)
 HL AutoLeveling (Sub)
U0182 Lost Communication With Lighting Control Module Front The headlight ECU sub-assembly RH does not receive data from the headlight ECU sub-assembly LH for approximately 10 seconds or more.
  • CAN communication system
  • Headlight ECU sub-assembly LH
 HL AutoLeveling (Sub)
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