C0425moderate severityChassis
Pre-Collision System Sensor Fusion Error
on 2021 Mazda MX-5 Miata 2.0L I4 · RWD
What this code means
The pre-collision system detects a mismatch between radar and camera object detection data.
Symptoms
- PCS temporarily disabled
- Intermittent PCS warnings
- False collision alerts or no alerts
- System unreliable in certain conditions
Common causes
- Radar or camera misalignment
- Sensor calibration drift
- One sensor partially blocked
- Environmental interference
Diagnostic steps
- Perform radar alignment check
- Calibrate forward camera
- Clean all sensor surfaces
- Check for software updates
- Test in controlled conditions
Repair notes
Calibrate all PCS sensors. Perform both static and dynamic calibration as required.
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