DTC B1212-00: Communication Error With Driver-Side Buckle Switch (No Response Or Error Data Received) (Airbag) (Us): Outline

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.

DTC B1212:00 [SAS CONTROL MODULE] DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Communication error with driver-side buckle switch (no response or error data received)
Detection condition	SAS control module detects a communication error (no response or error data received) with the driver-side buckle switch.
Fail-safe	Not applicable
Possible cause	SAS control module malfunction Dash-electrical supply unit malfunction Driver-side buckle switch malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable