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 B14F4-86: Error Signal Received From Other Modules Of Parking Assist Unit (Ultrasonic) [Vehicle Control Module (Us)] >> Outline
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC B14F4-86: Error Signal Received From Other Modules Of Parking Assist Unit (Ultrasonic) [Vehicle Control Module (Us)]: Outline

DTC B14F4:86 [VEHICLE CONTROL MODULE (US)] DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location Error signal received from other modules of parking assist unit (ultrasonic)
Detection condition
  • The vehicle control module (VCM) detects that the parking assist unit (ultrasonic) received error signals or a configuration data error from the following modules for 20 s.
    • DSC HU/CM
    • Steering angle sensor
    • Vehicle control module (VCM)
      • Body control module (BCM)
Fail-safe (See DTC TABLE [VEHICLE CONTROL MODULE (US)] .)
Possible cause
  • Configuration data error
  • Malfunction in each CAN communication related module
    • Parking assist unit (ultrasonic)
    • DSC HU/CM
    • Steering angle sensor
    • Vehicle control module (VCM)
      • Body control module (BCM)
  • CARIBRATING yaw rate for vehicle control module (VCM) not implemented or error
System wiring diagram Not applicable
Connector diagram Not applicable