DTC B14E0-87: Communication Error With Cluster Switch No. 1 (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 B14E0:87 (BCM) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Communication error with cluster switch No. 1
Detection condition	The instrument cluster cannot receive the signals from the cluster switch No. 1.
Fail-safe	Not applicable
Possible cause	Cluster switch No. 1 connector or terminal malfunction Instrument cluster connector or terminal malfunction Short to ground in cluster switch No. 1 LIN communication line Open circuit in cluster switch No. 1 LIN communication line Cluster switch No. 1 malfunction Instrument cluster malfunction Body control module (BCM) malfunction
Courtesy of MAZDA MOTORS CORP.