DTC B1A30-2B: Commander Switch Is Stuck On [Connectivity Master Unit]: 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 B1A30:2B (CONNECTIVITY MASTER UNIT) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Commander switch is stuck on
Detection condition	The connectivity master unit (CMU) detects that any of the commander switches is on for a continuous 3 min or more.
Fail-safe	Disables the operation using the button which detected the stuck on condition.
Possible cause	Intentionally pressing and holding commander switch Commander switch malfunction Commander switch circuit malfunction Connectivity master unit (CMU) malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable