Diagnostic Trouble Code Chart [04/2018 - ]

WARNING: This page is about a different car, the 2022 Toyota Avalon, 2021 Toyota Avalon, 2020 Toyota Avalon, and 2019 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

OCCUPANT CLASSIFICATION SYSTEM

DTC No.	Detection Item	Link
B1771	Passenger Side Buckle Switch Circuit Malfunction	Refer to DTC B1771: Passenger Side Buckle Switch Circuit Malfunction [04/2018 - ]
B1780	Front Occupant Classification Sensor LH Circuit Malfunction	Refer to DTC B1780: Front Occupant Classification Sensor LH Circuit Malfunction [04/2018 - ]
B1782	Rear Occupant Classification Sensor LH Circuit Malfunction	Refer to DTC B1782: Rear Occupant Classification Sensor LH Circuit Malfunction [04/2018 - ]
B1785	Front Occupant Classification Sensor LH Collision Detection	Refer to DTC B1785: Front Occupant Classification Sensor LH Collision Detection [04/2018 - ]
B1787	Rear Occupant Classification Sensor LH Collision Detection	Refer to DTC B1787: Rear Occupant Classification Sensor LH Collision Detection [04/2018 - ]
B1795	Occupant Classification ECU Malfunction	Refer to DTC B1795: Occupant Classification ECU Malfunction [04/2018 - ]
B1798	Yaw Rate Sensor Module Malfunction	Refer to DTC B1798: Yaw Rate Sensor Module Malfunction; DTC B1799: Vehicle Stability Control ECU Malfunction [04/2018 - ]
B1799	Vehicle Stability Control ECU Malfunction	Refer to DTC B1798: Yaw Rate Sensor Module Malfunction; DTC B1799: Vehicle Stability Control ECU Malfunction [04/2018 - ]
U0125	Lost Communication with Multi-axis Acceleration Sensor Module	Refer to DTC U0125: Lost Communication with Multi-axis Acceleration Sensor Module; DTC U0129: Lost Communication with Brake System Control Module [04/2018 - ]
U0129	Lost Communication with Brake System Control Module	Refer to DTC U0125: Lost Communication with Multi-axis Acceleration Sensor Module; DTC U0129: Lost Communication with Brake System Control Module [04/2018 - ]