DTC B14F1-97: Radar Sensor Sensitivity Decreases Depending On Various External And Environmental Factors [Vehicle Control Module]: Outline

WARNING: This page is about a different car, the 2021 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

DTC B14F1:97 [VEHICLE CONTROL MODULE] DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Radar sensor sensitivity decreases depending on various external and environmental factors
Detection condition	The vehicle control module (VCM) detects that the front side radar sensor (LH) or (RH) internal radar sensor sensitivity has decreased and the related system is obstructed for 15 min.
Fail-safe	(See DTC TABLE [VEHICLE CONTROL MODULE (US)] .)
Possible cause	Front bumper malfunction Damage (including repairs using putty application) Dirt Application of stickers (including transparent types) Freezing Front bumper poor installation Front side radar sensor poor installation Front side radar sensor (RH) malfunction Front side radar sensor (LH) malfunction Vehicle control module (VCM) malfunction (built into body control module (BCM))
System wiring diagram	Not applicable
Connector diagram	Not applicable