DTC U212E-00: Communication Error With Door-Electrical Supply Unit (Driver's Side) (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 U212E:00 (BCM) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Communication error with door-electrical supply unit (driver's side)
Detection condition	The body control module (BCM) cannot receive CAN signal from the door-electrical supply unit (driver's side).
Fail-safe	Not applicable
Possible cause	Malfunction in CAN communication line between door-electrical supply unit (driver's side) and body control module (BCM)
System wiring diagram	Not applicable