C0445high severityChassis
Pedestrian Detection System Fault
on 2020 Mazda Mazda3 2.5L I4 · FWD
What this code means
Malfunction in the pedestrian detection subsystem of the collision avoidance suite.
Symptoms
- Pedestrian detection warning
- AEB for pedestrians disabled
- Forward camera or radar issue
- Driver assist reduced message
Common causes
- Camera cannot distinguish pedestrian shapes
- Radar calibration preventing pedestrian classification
- Sensor fusion mismatch
- Software algorithm error
Diagnostic steps
- Check forward camera operation
- Verify radar module function
- Test in area with pedestrians at low speed
- Check for software updates
- Perform sensor calibration
Repair notes
Calibrate sensors. Update software if available. Replace faulty camera or radar module.
Other Chassis codes on this vehicle
C0021
LF Wheel Speed Sensor Range/Performance
C0022
RF Wheel Speed Sensor Range/Performance
C0023
LR Wheel Speed Sensor Range/Performance
C0024
RR Wheel Speed Sensor Range/Performance
C0025
LF Wheel Speed Sensor Circuit Intermittent
C0026
RF Wheel Speed Sensor Circuit Intermittent
C0027
LR Wheel Speed Sensor Circuit Intermittent
C0028
RR Wheel Speed Sensor Circuit Intermittent
C0035
Left Front Wheel Speed Sensor Circuit
C0036
Left Front Wheel Speed Signal Erratic