DTC B161A-8A: Lost Communication with Front Satellite Sensor Bus [12/2012 - ]: Description

The front collision sensor circuit (front airbag sensor RH circuit and front airbag sensor LH circuit) is composed of the airbag sensor assembly, front airbag sensor RH and front airbag sensor LH.

The front airbag sensor RH or front airbag sensor LH detects impacts to the vehicle and sends signals to the airbag sensor assembly to determine if the airbag should be deployed.

DTC B161A/8A is stored when a malfunction is detected in the front collision sensor circuit (front airbag sensor RH circuit and front airbag sensor LH circuit).

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
B161A/8A	Lost Communication with Front Satellite Sensor Bus	One of the following conditions is met: The airbag sensor assembly detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in the front collision sensor circuit (front airbag sensor RH circuit and front airbag sensor LH circuit). A front airbag sensor RH malfunction. A front airbag sensor LH malfunction. An airbag sensor assembly malfunction.	Instrument panel wire Engine room main wire Front airbag sensor RH Front airbag sensor LH Airbag sensor assembly