B2403
Blind Spot Monitor Calibration Required
2016-2020 Buick Envision 2.5L I4 🇨🇦
Moderate SeverityBody
Description
The blind spot monitoring system requires recalibration after sensor replacement or rear body repair.
Symptoms
- BSM system not functioning after repair
- Sensors not detecting vehicles
- False alerts or missed detections
- Calibration warning message
Common Causes
- Sensor replaced without calibration
- Rear bumper repair altered sensor alignment
- Rear collision shifted sensor mounting
- Sensor firmware update needed
Diagnostic Steps
- Verify sensor mounting alignment
- Perform BSM sensor calibration
- Check for rear body damage affecting sensor angle
- Use manufacturer calibration procedure
- Test system with dynamic road test
Repair Notes
Perform blind spot monitor calibration per manufacturer procedure.
Related Codes
Other Body Codes
- B0001Driver Frontal Stage 1 Deployment Control
- B0001Driver Frontal Stage 1 Deployment Control
- B0002Driver Frontal Stage 2 Deployment Control
- B0002Driver Frontal Stage 2 Deployment Control
- B0003Passenger Frontal Stage 1 Deployment Control
- B0003Passenger Frontal Stage 1 Deployment Control
- B0004Passenger Frontal Stage 2 Deployment Control
- B0004Passenger Frontal Stage 2 Deployment Control
- B0005Driver Knee Airbag Deployment Circuit
- B0005Driver Knee Airbag Deployment Circuit
B2403 on Other Vehicles
Common Questions
What does code B2403 mean on a 2016-2020 Buick Envision?
B2403 stands for "Blind Spot Monitor Calibration Required". The blind spot monitoring system requires recalibration after sensor replacement or rear body repair.
What are the symptoms of B2403 on a Buick Envision?
Common symptoms of B2403 include: BSM system not functioning after repair, Sensors not detecting vehicles, False alerts or missed detections, Calibration warning message.
What causes B2403 on a 2016-2020 Buick Envision?
Common causes of B2403 include: Sensor replaced without calibration, Rear bumper repair altered sensor alignment, Rear collision shifted sensor mounting, Sensor firmware update needed.