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Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 189 (Lighting System (Ext) (Hybrid) - Diagnostic Codes (2 Of 2) & Symptom Tests (1 Of 2)) >> LIGHTING SYSTEM (for HV 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

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

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, 2021 Lexus ES 300h, and 2020 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.

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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