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Home >> Lexus >> 2021 >> LS 500h RWD >> Repair and Diagnosis (Single Page) >> Suspension >> Suspension Control Systems >> Adaptive Variable Suspension System - Diagnostic Codes >> Adaptive Variable Suspension System >> DTC U0101: Lost Communication with TCM; DTC U0122: Lost Communication With Vehicle Dynamics Control Module; DTC U0124: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0293: Lost Communication with Hybrid Vehicle Control System; DTC U114C: Lost Communication with Suspension Control Module 1 [10/2020 - 10/2023] >> Description
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DTC U0101: Lost Communication with TCM; DTC U0122: Lost Communication With Vehicle Dynamics Control Module; DTC U0124: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0293: Lost Communication with Hybrid Vehicle Control System; DTC U114C: Lost Communication with Suspension Control Module 1 [10/2020 - 10/2023]: Description

The absorber control ECU receives signals from the skid control ECU assembly*1, No. 2 skid control ECU (brake actuator assembly)*2, steering sensor, acceleration sensor (yaw rate sensor)*1, airbag ECU assembly*2, suspension control ECU and hybrid vehicle control ECU assembly via CAN communication.

  1. *1: w/o Advanced Park
  2. *2: w/ Advanced Park

When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system first.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory
U0101 Lost Communication with TCM While driving at 30 km/h (19 mph) or more, data is not received via CAN communication for 6 seconds or more.
  • Hybrid vehicle control ECU assembly
  • CAN communication system
  • Absorber control ECU
 Does not come on Yes
U0122 Lost Communication With Vehicle Dynamics Control Module Data is not received from the skid control ECU assembly*1 or No. 2 skid control ECU (brake actuator assembly)*2 via CAN communication for 3 seconds or more.
  • Skid control ECU assembly*1
  • No. 2 skid control ECU (brake actuator assembly)*2
  • CAN communication system
  • Absorber control ECU
 Does not come on Yes
U0124 Lost Communication with Lateral Acceleration Sensor Module Data is not received from the acceleration sensor (yaw rate sensor)*1 or airbag ECU assembly*2 via CAN communication for 3 seconds or more.
  • Acceleration sensor (yaw rate sensor)*1
  • Airbag ECU assembly*2
  • CAN communication system
  • Absorber control ECU
 Does not come on Yes
U0126 Lost Communication with Steering Angle Sensor Module Data is not received from the steering sensor via CAN communication for 3 seconds or more.
  • Steering sensor
  • CAN communication system
  • Absorber control ECU
 Does not come on Yes
U0293 Lost Communication with Hybrid Vehicle Control System While driving at 30 km/h (19 mph) or more, data is not received via CAN communication for 3 seconds or more.
  • Hybrid vehicle control ECU assembly
  • CAN communication system
  • Absorber control ECU
 Does not come on Yes
U114C Lost Communication with Suspension Control Module 1 Data is not received from the suspension Control ECU via CAN communication for 4 seconds or more.
  • Suspension Control ECU
  • CAN communication system
  • Absorber control ECU
 Does not come on Yes
  1. *1: w/o Advanced Park
  2. *2: w/ Advanced Park
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