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Home >> Lexus >> 2021 >> UX 200 Base >> Repair and Diagnosis (Single Page) >> Restraints >> Air Bag, SRS >> Occupant Classification System (Diagnostic Codes & Symptom Tests) >> Occupant Classification System >> DTC B1798: Yaw Rate Sensor Module Malfunction; DTC B1799: Vehicle Stability Control ECU Malfunction [10/2018 - 07/2022] >> Description

DTC B1798: Yaw Rate Sensor Module Malfunction; DTC B1799: Vehicle Stability Control ECU Malfunction [10/2018 - 07/2022]: Description

The occupant detection ECU receives signals from the acceleration sensor and skid control ECU via CAN communication.

DTC No. Detection Item DTC Detection Condition Trouble Area
B1798 Yaw Rate Sensor Module Malfunction Acceleration signals are abnormal
  • Acceleration sensor (Airbag ECU assembly)
  • CAN communication system
  • Occupant detection ECU
B1799 Vehicle Stability Control ECU Malfunction Vehicle speed signal from skid control ECU is abnormal
  • Skid control ECU (Brake booster with master cylinder assembly)*1
  • Skid control ECU (Brake actuator assembly)*2
  • CAN communication system
  • Occupant detection ECU
  1. *1: for HV Model
  2. *2: for Gasoline Model