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Home >> Lexus >> 2016 >> GS 450h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Collision/Avoidance >> Lane Keeping Assist System (Diagnostic Codes & Circuit Tests) >> Lane-Keeping Assist System >> DTC U0101: Lost Communication With TCM; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0130: Lost Communication with VGRS; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0134: Lost Communication with DRS Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0155: Lost Communication with Combination Meter; DTC U0293: HV ECU Communication [10/2015 - ] >> Description
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DTC U0101: Lost Communication With TCM; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0130: Lost Communication with VGRS; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0134: Lost Communication with DRS Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0155: Lost Communication with Combination Meter; DTC U0293: HV ECU Communication [10/2015 - ]: Description

When a malfunction is detected between various ECUs and sensors, these DTCs are stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
U0101 Lost Communication With TCM While the vehicle is being driven at 1 km/h or 1 mph or more, a communication error between the TCM (ECM) and the forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • TCM (ECM)
  • Forward recognition camera
U0123 Lost Communication with Yaw Rate Sensor Module While the vehicle is being driven at 1 km/h or 1 mph or more, a communication error between the acceleration sensor (yaw rate sensor) and the forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • Acceleration sensor (yaw rate sensor)
  • Forward recognition camera
U0126 Lost Communication with Steering Angle Sensor Module 2 seconds after the power switch is turned on (IG), a communication error between the steering sensor and the forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • Steering sensor
  • Forward recognition camera
U0129 Lost Communication with Brake System Control Module 2 seconds after the power switch is turned on (IG), a communication error between the skid control ECU assembly and the forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • Skid control ECU assembly
  • Forward recognition camera
U0130 Lost Communication with VGRS 2 seconds after the power switch is turned on (IG), a communication error between the VGRS ECU (front steering control ECU) and the forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • VGRS ECU (front steering control ECU)
  • Forward recognition camera
U0131 Lost Communication with Power Steering Control Module 2 seconds after the power switch is turned on (IG), a communication error between the power steering ECU assembly and the forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • Power steering ECU assembly
  • Forward recognition camera
U0134 Lost Communication with DRS Module 2 seconds after the power switch is turned on (IG), a communication error between the DRS ECU (rear steering control ECU) and the forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • DRS ECU (rear steering control ECU)
  • Forward recognition camera
U0142 Lost Communication with Body Control Module "B" 2 seconds after the power switch is turned on (IG), a communication error between the main body ECU (multiplex network body ECU) and the forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • Main body ECU (Multiplex network body ECU)
  • Forward recognition camera
U0155 Lost Communication with Combination Meter 2 seconds after the power switch is turned on (IG), a communication error between the combination meter assembly and the forward recognition camera is detected for approximately 50 seconds or more.
  • CAN communication system
  • Combination meter assembly
  • Forward recognition camera
U0293 HV ECU Communication 2 seconds after the power switch is turned on (IG), a communication error between the power management control ECU and the forward recognition camera is detected for approximately 5 seconds.
  • CAN communication system
  • Power management control ECU
  • Forward recognition camera
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