Diagnostic Trouble Code Chart [04/2013 - 08/2015]

WARNING: This page does not describe the selected car, but rather 27 other vehicles, including the 2024 Lexus IS 500, 2024 Lexus IS 350, 2024 Lexus IS 300, 2023 Lexus IS 500, and 2023 Lexus IS 350. 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 [04/2013 - 09/2020]
B1780	Front Occupant Classification Sensor LH Circuit Malfunction	Refer to DTC B1780: Front Occupant Classification Sensor LH Circuit Malfunction [04/2013 - 09/2020]
B1782	Rear Occupant Classification Sensor LH Circuit Malfunction	Refer to DTC B1782: Rear Occupant Classification Sensor LH Circuit Malfunction [04/2013 - 09/2020]
B1785	Front Occupant Classification Sensor LH Collision Detection	Refer to DTC B1785: Front Occupant Classification Sensor LH Collision Detection [04/2013 - 09/2020]
B1787	Rear Occupant Classification Sensor LH Collision Detection	Refer to DTC B1787: Rear Occupant Classification Sensor LH Collision Detection [04/2013 - 09/2020]
B1790	Center Airbag Sensor Assembly Communication Circuit Malfunction	Refer to DTC B1790: Center Airbag Sensor Assembly Communication Circuit Malfunction [04/2013 - 09/2020]
B1793	Occupant Classification Sensor Power Supply Circuit Malfunction	Refer to DTC B1793: Occupant Classification Sensor Power Supply Circuit Malfunction [04/2013 - 09/2020]
B1794	Open in Occupant Classification ECU Battery Positive Line	Refer to DTC B1794: Open in Occupant Classification ECU Battery Positive Line [04/2013 - 08/2015]
B1795	Occupant Classification ECU Malfunction	Refer to DTC B1795: Occupant Classification ECU Malfunction [04/2013 - 09/2020]
B1796	Sleep Operation Failure of Occupant Classification ECU	Refer to DTC B1796: Sleep Operation Failure of Occupant Classification ECU [04/2013 - ]