DTC U250B-00: Error Signal Received From Body Control Module (BCM) [Dash-Electrical Supply 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 U250B:00 [DASH-ELECTRICAL SUPPLY UNIT] DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Error signal received from body control module (BCM)
Detection condition	The dash-electrical supply unit detects any of the following conditions. The dash-electrical supply unit receives the error signal from the body control module (BCM). The climate control unit receives the error signal from the body control module (BCM).
Fail-safe	The value of the error signal is fixed at the specified value.
Possible cause	DTCs are stored in the body control module (BCM). Body control module (BCM) malfunction Climate control unit malfunction Dash-electrical supply unit malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable