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Home >> Lexus >> 2023 >> LX 600 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> Lighting System (W/O Adaptive High Beam System) - Diagnostic Codes & Circuit Tests >> LIGHTING SYSTEM (w/o Adaptive High Beam System) >> DTC U0126-87: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module "A" Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message; DTC U0241-87: Lost Communication with Headlamp Control Module "A" Missing Message; DTC U114F-87: Lost Communication with Power Integration Module Missing Message [12/2021 - ] >> Description
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DTC U0126-87: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module "A" Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message; DTC U0241-87: Lost Communication with Headlamp Control Module "A" Missing Message; DTC U114F-87: Lost Communication with Power Integration Module Missing Message [12/2021 - ]: Description

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from Priority
U0126-87 Lost Communication with Steering Angle Sensor Module Missing Message 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
  • Headlight ECU sub-assembly RH
 Headlight Control (Sub) B
U0129-87 Lost Communication with Brake System Control Module "A" Missing Message The headlight ECU sub-assembly RH does not receive data from the brake actuator assembly (skid control ECU) for approximately 10 seconds or more
  • CAN communication system
  • Brake actuator assembly (skid control ECU)
  • Headlight ECU sub-assembly RH
 Headlight Control (Sub) B
U0140-87 Lost Communication with Body Control Module Missing Message 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)
  • Headlight ECU sub-assembly RH
 Headlight Control (Sub) B
U0155-87 Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message The headlight ECU sub-assembly RH does not receive data from the combination meter assembly for approximately 10 seconds or more
  • CAN communication system
  • Combination meter assembly
  • Headlight ECU sub-assembly RH
 Headlight Control (Sub) B
U0241-87 Lost Communication with Headlamp Control Module "A" Missing Message 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
  • Headlight ECU sub-assembly RH
 Headlight Control (Sub) B
U114F-87 Lost Communication with Power Integration Module Missing Message The headlight ECU sub-assembly RH does not receive data from the power distribution box assembly for approximately 10 seconds or more
  • CAN communication system
  • Power distribution box assembly
  • Headlight ECU sub-assembly RH
 Headlight Control (Sub) B
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