DTC U2100-56: LF Control Unit Configuration Error (BCM): 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 U2100:56 (BCM) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	LF control unit configuration error
Detection condition	The LF control unit configuration error (incorrect value write) detected.
Fail-safe	Not applicable
Possible cause	Body control module (BCM) configuration data write error LF control unit malfunction Body control module (BCM) malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable