2022 Mazda 3 BaseFACTORY OEM SERVICE PROCEDURE

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

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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
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