B2400moderate severityBody
Lane Departure Warning Camera Circuit
on 2020 Mazda Mazda3 2.5L Skyactiv-G I4 (186 hp) ยท AWD
What this code means
Malfunction in the lane departure warning (LDW) camera or processing module.
Symptoms
- Lane departure warning not functioning
- LDW warning light on
- System unavailable message
- Camera blocked warning
Common causes
- Faulty LDW camera
- Dirty windshield in camera field of view
- Camera misaligned after windshield replacement
- Camera module overheating
- Wiring issue
Diagnostic steps
- Clean windshield in camera area
- Check camera alignment marks
- Verify windshield is OEM-compatible
- Inspect camera connector
- Scan ADAS module for codes
- Check for camera recalibration requirement
Repair notes
Clean windshield first. Recalibrate camera after windshield replacement. Replace camera module if faulty.
๐ Don't have a code reader?
Any of these will read and clear this code โ pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 โ
No-phone-needed handheld โ reads, clears, live data, freeze frame.
โ ANCEL official store
Serious DIY~$100
BlueDriver Pro โ
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
SHOP FAVORITEShop-grade tablet~$300
Autel MaxiCOM MK808S โ
Bidirectional tests, service resets, all systems.
โ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro โ
Full-system pro platform โ topology mapping, ECU coding, the works.
โ Autel official store
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases โ how we link. This never changes the specs we publish.
Other Body codes on this vehicle
B0001
Driver Frontal Stage 1 Deployment Control
B0001
Driver Frontal Stage 1 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0005
Driver Knee Airbag Deployment Circuit
B0005
Driver Knee Airbag Deployment Circuit