B0041critical severityBody
Side Crash Sensor Communication Error - Left
on 2018 Mazda Mazda3 2.5L I4 · FWD
What this code means
Communication loss between the left side crash sensor and the airbag control module.
Symptoms
- Airbag warning light on
- SRS code stored
- Left side airbag protection degraded
Common causes
- Damaged wiring in door or B-pillar
- Faulty sensor
- ACM bus fault
- Door harness disconnect
Diagnostic steps
- Scan SRS codes
- Check B-pillar connector
- Inspect door-to-body wiring
- Test sensor bus communication
Repair notes
Repair wiring or replace left side crash sensor.
Other Body codes on this vehicle
B0001
Driver Frontal Stage 1 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0005
Driver Knee Airbag Deployment Circuit
B0006
Passenger Knee Airbag Deployment Circuit
B0007
Rear Left Side Airbag Deployment Circuit
B0008
Rear Right Side Airbag Deployment Circuit
B0009
Rear Center Airbag Deployment Circuit
B0010
Driver Side Airbag Deployment