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Home >> Mazda >> 2021 >> 3 Select, 4D Hatchback, FWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> On-Board Diagnostic - Vehicle Control Module (1 Of 2) >> DTC B14F4-04: Parking Assist Unit (Ultrasonic) Internal Malfunction [Vehicle Control Module] >> Outline
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DTC B14F4-04: Parking Assist Unit (Ultrasonic) Internal Malfunction [Vehicle Control Module]: Outline

DTC B14F4:04 [VEHICLE CONTROL MODULE] DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location Parking assist unit (ultrasonic) internal malfunction
Detection condition
  • The vehicle control module (VCM) detects a parking assist unit (ultrasonic) internal malfunction for 11 s.
NOTE:
  • The malfunction may also occur temporarily if the internal processing of the parking assist unit (ultrasonic) becomes slow.
  • If so, the unit returns to normal.
Fail-safe (See DTC TABLE [VEHICLE CONTROL MODULE (US)] .)
Possible cause
  • Parking assist unit (ultrasonic) malfunction
  • Vehicle control module (VCM) malfunction (built into body control module (BCM))
System wiring diagram Not applicable
Connector diagram Not applicable