DTC U0443 00: Error Signal Received From Rear Body Control Module (RBCM): Notes

WARNING: This page is about a different car, the 2014 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

DTC U0443:00 (VEHICLE CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Error signal received from rear body control module (RBCM)
Detection condition	Communication error between rear body control module (RBCM) and vehicle control module (V/C-module)
Fail-safe	Inhibits the Mazda radar cruise control (MRCC) system control Inhibits the forward obstruction warning (FOW) system control
Possible cause	Rear body control module (RBCM) malfunction Instrument cluster malfunction Vehicle control module (V/C-module) malfunction
System wiring diagram	Not applicable