DTC U212B-87: Communication Error With Body Control Module (BCM) [Auto Leveling Control Module]: Outline

WARNING: This page is about a different car, the 2021 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

DTC U212B:87 (AUTO LEVELING CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Communication error with body control module (BCM)
Detection condition	The auto leveling control module cannot receive CAN signal from the body control module (BCM).
Fail-safe	Control of the headlight auto leveling system is continued.
Possible cause	Malfunction in CAN communication line between body control module (BCM) and auto leveling control module
System wiring diagram	Not applicable