DTC B14F2-78: Rear Side Radar Sensor Optical Axis Deviation [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 B14F2:78 [VEHICLE CONTROL MODULE] DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Rear side radar sensor optical axis deviation
Detection condition	The vehicle control module (VCM) detects that the rear side radar sensor (LH) or (RH) determined an axis deviation for 10 s.
Fail-safe	(See DTC TABLE [VEHICLE CONTROL MODULE (US)] .)
Possible cause	Rear bumper malfunction Damage (including repairs using putty application) Dirt Application of stickers (including transparent types) Freezing Rear bumper poor installation Rear side radar sensor poor installation Rear side radar sensor aiming adjustment malfunction (optical axis deviation) Rear side radar sensor (RH) malfunction Rear 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