DTC B163B: Side Airbag Sensor Assembly No. 2 Lost Communication (LH); DTC B163C: Side Airbag Sensor Assembly No. 2 Initialization Error (LH) [10/2020 - 11/2021]: Description

The side collision sensor LH circuit consists of the airbag ECU assembly, door side airbag sensor LH, side airbag sensor assembly LH, rear airbag sensor LH and No. 2 side airbag sensor assembly.

The door side airbag sensor LH, side airbag sensor assembly LH, rear airbag sensor LH and No. 2 side airbag sensor assembly detect impacts to the vehicle and send signals to the airbag ECU assembly to determine if the airbags and pretensioners should be deployed.

These DTCs are stored when a malfunction is detected in the No. 2 side collision sensor LH circuit.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Test Mode / Check Mode
B163B	Side Airbag Sensor Assembly No. 2 Lost Communication (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 side collision sensor LH circuit. A No. 2 side airbag sensor assembly LH malfunction An airbag ECU assembly malfunction	Floor wire No. 2 side airbag sensor assembly LH Airbag ECU assembly	Comes on	Not applicable
B163C	Side Airbag Sensor Assembly No. 2 Initialization Error (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 side collision sensor LH circuit. A No. 2 side airbag sensor assembly LH malfunction An airbag ECU assembly malfunction	Floor wire No. 2 side airbag sensor assembly LH Airbag ECU assembly	Comes on	Not applicable