LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2021 >> 6 Signature >> Repair and Diagnosis >> External Pages >> Different car >> Section 64 (On-Board Diagnostic - Front Body Control Module (FBCM)) >> DTC U053B-68: Error Signal Received From Forward Sensing Camera (FSC) >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC U053B-68: Error Signal Received From Forward Sensing Camera (FSC): Notes

WARNING: This page is about a different car, the 2018 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DTC U053B:68 (FRONT BODY CONTROL MODULE (FBCM)) DETECTION CONDITION AND POSSIBLE CAUSE

Description Error signal received from forward sensing camera (FSC)
Detection condition
  • Front body control module (FBCM) receives the error signals from the forward sensing camera (FSC) for 5 s or more with the ignition switched ON (engine off or on).
Fail-safe
  • Inhibits the high beam control (HBC) system.
Possible cause
  • Forward sensing camera (FSC) malfunction
  • Front body control module (FBCM) malfunction
System wiring diagram Not applicable