DTC U053B; Abnormal Message From Forward Sensing Camera (FSC): 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

DTC	U053B:00	Abnormal message from forward sensing camera (FSC)
DETECTION CONDITION		Correct data cannot be received from forward sensing camera (FSC)
FAIL-SAFE FUNCTION		Illuminates the Smart Brake Support/Smart City Brake Support (SBS/SCBS indicator light (amber). Inhibits the Smart City Brake Support (SCBS) control.
POSSIBLE CAUSE		Forward sensing camera (FSC) malfunction
SYSTEM WIRING DIAGRAM		Not applicable