DTC B16A7: Lost Communication with Pedestrian Protection Sensor Bus LH; DTC B16A8: Pedestrian Protection Sensor Bus Initialization Incomplete (LH) [04/2020 - 05/2023]: Description

The pedestrian protection sensor LH circuit consists of the airbag ECU assembly and pedestrian protection sensor LH.

The pedestrian protection sensor LH detects impacts to the vehicle and sends signals to the airbag ECU assembly to determine if the pop up hood should be deployed.

These DTCs are stored when a malfunction is detected in the pedestrian protection sensor LH circuit.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Test Mode / Check Mode
B16A7	Lost Communication with Pedestrian Protection Sensor Bus LH	One of the following conditions is met: The airbag ECU assembly detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in the circuit for the pedestrian protection sensor LH for 2 seconds. A pedestrian protection sensor LH malfunction. An airbag ECU assembly malfunction.	Floor wire Instrument panel wire Engine room main wire Pedestrian detection chamber assembly (pedestrian protection sensor LH) Airbag ECU assembly	Comes on	Not applicable
B16A8	Pedestrian Protection Sensor Bus Initialization Incomplete (LH)	One of the following conditions is met: The airbag ECU assembly detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in the circuit for the pedestrian protection sensor LH for 2 seconds. A pedestrian protection sensor LH malfunction. An airbag ECU assembly malfunction.	Floor wire Instrument panel wire Engine room main wire Pedestrian detection chamber assembly (pedestrian protection sensor LH) Airbag ECU assembly	Comes on	Not applicable