DTC B14E1-87: Communication Error With Cluster Switch No. 2 (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 B14E1:87 (BCM) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Communication error with cluster switch No. 2
Detection condition	The instrument cluster cannot receive the signals from the cluster switch No. 2.
Fail-safe	Not applicable
Possible cause	Cluster switch No. 2 connector or terminal malfunction Instrument cluster connector or terminal malfunction Short to ground in cluster switch No. 2 LIN communication line Open circuit in cluster switch No. 2 LIN communication line Cluster switch No. 2 malfunction Instrument cluster malfunction Body control module (BCM) malfunction
Courtesy of MAZDA MOTORS CORP.