DTC U0422 00: Error Signal Received From Front Body Control Module (FBCM): 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 U0422:00 (VEHICLE CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Error signal received from front body control module (FBCM)
Detection condition	Communication error between front body control module (FBCM) 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	Front body control module (FBCM) malfunction Vehicle control module (V/C-module) malfunction
System wiring diagram	Not applicable