Conditions for Setting the DTC
WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
B0072 01 or B0073 01
The seat belt switch circuit is shorted to voltage.
B0072 02 or B0073 02
The seat belt switch circuit is shorted to ground.
B0072 04 or B0073 03
The seat belt switch circuit is open.
B0072 05 or B0073 05
The seat belt switch circuit is shorted to voltage or open.
B0072 06 or B0073 06
The seat belt switch circuit is shorted to ground or open.
B0072 08 or B0073 08
The seat belt switch signal is invalid.
B0072 0B or B0073 0B
The seat belt switch signal is above threshold.
B0072 0C or B0073 0C
The seat belt switch signal is below threshold.