DTC U3000-54: Radar Performance Malfunction: Notes

WARNING: This page is about a different car, the 2018 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

DTC U3000:54 BLIND SPOT MONITORING (BSM) CONTROL MODULE DETECTION CONDITION AND POSSIBLE CAUSE

Description	Radar Performance Malfunction
Detection condition	Blind spot monitoring (BSM) control module detected malfunction in misalignment.
Fail-safe	Blind spot monitoring (BSM) system is stopped.
Possible cause	Rear bumper soiling or foreign material (reflective object) is adhered. Dirt or foreign material (reflective object) on blind spot monitoring (BSM) control module. Deviation of blind spot monitoring (BSM) radar sensor axis Blind spot monitoring (BSM) radar test was not performed. Blind spot monitoring (BSM) control module malfunction
System wiring diagram	Not applicable