DTC B165C: 2nd Seat Seat Belt Buckle Switch (LH) [10/2020 - 10/2023]: Description

The seat belt buckle switch LH circuit consists of the airbag ECU assembly, pedestrian detection ECU assembly and rear seat inner belt assembly LH.

DTC B165C is stored when a malfunction is detected in the seat belt buckle switch LH circuit.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Test Mode / Check Mode
B165C	2nd Seat Seat Belt Buckle Switch (LH)	One of the following conditions is met: The airbag ECU assembly detects a line short, short to ground or B+, or an open in the seat belt buckle switch LH circuit. A rear seat inner belt assembly LH malfunction An airbag ECU assembly malfunction	Floor wire Rear seat wire LH Instrument panel wire Rear seat inner belt assembly LH Airbag ECU assembly	Comes on	Not applicable