LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2021 >> 3 Select, 4D Hatchback, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> On-Board Diagnostic - Vehicle Control Module (1 Of 2) >> DTC B14F3-92: Driver Monitoring Camera Unit Performance Decrease [Vehicle Control Module] >> Outline
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC B14F3-92: Driver Monitoring Camera Unit Performance Decrease [Vehicle Control Module]: Outline

DTC B14F3:92 [VEHICLE CONTROL MODULE] DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location Driver monitoring camera unit performance decrease
Detection condition
  • The vehicle control module (VCM) detects that the brightness at the face position shot by the driver monitoring camera was decreased for 13 s. Precondition
  • Vehicle is being driven
Fail-safe (See DTC TABLE [VEHICLE CONTROL MODULE (US)] .)
Possible cause
NOTE:
  • Driver monitoring camera is built into center display
  • Driver monitoring camera LED is built into center display
  • Scratches or dirt on driver monitoring camera lens
  • Obstruction around driver monitoring camera
  • Scratches, dirt, or obstruction around driver monitoring camera LED
  • Driver monitoring camera unit malfunction
  • Vehicle control module (VCM) malfunction (built into body control module (BCM))
System wiring diagram Not applicable
Connector diagram Not applicable