Conditions for Setting the DTC
WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
B0021 12, B0029 12
The air bag control circuit is shorted to voltage for 2 seconds.
B0021 11, B0029 11
The air bag control circuit is shorted to ground for 2 seconds.
B0021 13, B0029 13
The air bag control circuit is open for 2 seconds.
B0021 1B, B0029 1B
The air bag deployment loop resistance is greater than 4.2 Ω for 2 seconds.
B0021 1A, B0029 1A
The air bag deployment loop resistance is less than 1.4 Ω for 2 seconds.