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DTC U053B 68: Error Signal Received From Forward Sensing Camera (FSC): 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 U053B:68 (FRONT BODY CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSES

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 function  Not applicable
Possible cause 
  • Forward sensing camera (FSC) malfunction
  • Front body control module (FBCM) malfunction
System wiring diagram  Not applicable