DTC U0447-86; Communication Error Between Front Body Control Module (FBCM) And Instrument Cluster: Notes

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

DETECTION CONDITION & POSSIBLE CAUSE

Description	Communication error between front body control module (FBCM) and instrument cluster
Detection condition	Rear body control module (RBCM) receives the error signals from the instrument cluster for 10 times continuously with the ignition switched ON (engine off or on).
Fail-safe	Not applicable
Possible cause	DTCs are stored in the instrument cluster. DTCs are stored in the front body control module (FBCM). Instrument cluster malfunction Front body control module (FBCM) malfunction Rear body control module (RBCM) malfunction
System wiring diagram	Not applicable