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Home >> Lexus >> 2019 >> UX 250h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> Lighting System (Exterior) (Diagnostic Codes (2 Of 2) & Circuit Tests) >> Lighting System >> DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U012587: Lost Communication with Multi-axis Acceleration Sensor Module Missing Message; DTC U012987: Lost Communication with Brake System Control Module Missing Message; DTC U014087: Lost Communication with Body Control Module Missing Message; DTC U029387: Lost Communication With Hybrid Powertrain Control Module Missing Message [07/2022 - ] >> Description
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DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U012587: Lost Communication with Multi-axis Acceleration Sensor Module Missing Message; DTC U012987: Lost Communication with Brake System Control Module Missing Message; DTC U014087: Lost Communication with Body Control Module Missing Message; DTC U029387: Lost Communication With Hybrid Powertrain Control Module Missing Message [07/2022 - ]: Description

These DTCs are stored if a CAN communication malfunction occurs between the forward recognition camera and other ECUs.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from
U010087 Lost Communication with ECM/PCM "A" Missing Message The forward recognition camera does not receive data from the ECM for approximately 5 seconds or more.
  • CAN communication system
  • ECM
  • Forward recognition camera
 Front Recognition Camera (Front Lighting Control)
U012587 Lost Communication with Multi-axis Acceleration Sensor Module Missing Message The forward recognition camera does not receive data from the airbag ECU assembly for approximately 5 seconds or more.
  • CAN communication system
  • Airbag ECU assembly
  • Forward recognition camera
 Front Recognition Camera (Front Lighting Control)
U012987 Lost Communication with Brake System Control Module Missing Message The forward recognition camera does not receive data from the skid control ECU (brake booster with master cylinder assembly) for approximately 5 seconds or more.
  • CAN communication system
  • Forward recognition camera
  • Skid control ECU (brake booster with master cylinder assembly)
 Front Recognition Camera (Front Lighting Control)
U014087 Lost Communication with Body Control Module Missing Message The forward recognition camera does not receive data from the main body ECU (multiplex network body ECU) for approximately 5 seconds or more.
  • CAN communication system
  • Main body ECU (multiplex network body ECU)
  • Forward recognition camera
 Front Recognition Camera (Front Lighting Control)
U029387 Lost Communication With Hybrid Powertrain Control Module Missing Message The forward recognition camera does not receive data from the hybrid vehicle control ECU for approximately 5 seconds or more.
  • CAN communication system
  • Hybrid vehicle control ECU
  • Forward recognition camera
 Front Recognition Camera (Front Lighting Control)
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