April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC B1782: Rear Occupant Classification Sensor LH Circuit Malfunction [08/2019 - ]: Description

The rear occupant classification sensor LH circuit consists of the occupant classification ECU and rear occupant classification sensor LH.

DTC B1782 is stored when a malfunction is detected in the rear occupant classification sensor LH circuit.

DTC Code	DTC Detection Condition	Trouble Area
B1782	One of the following conditions is met: Occupant classification ECU detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to +B signal in the rear occupant classification sensor LH circuit for 2 seconds. Rear occupant classification sensor LH malfunction. Occupant classification ECU malfunction.	Separate type front seat cushion spring RH (Rear occupant classification sensor LH) Front seat wire RH Occupant classification ECU

HINT:

When DTC B1650 is stored as a result of troubleshooting the airbag system, perform troubleshooting for DTC B1782 of the occupant classification system.
Use the Techstream to check for DTCs of the occupant classification ECU, otherwise the DTCs cannot be read.