B0064high severityBody
Child Seat Detection Circuit
on 2014-2018 Mazda Mazda3 2.5L I4 · FWD
What this code means
Malfunction in the child seat detection system. This system uses the occupancy sensor or a dedicated transponder to detect a child restraint system.
Symptoms
- Child seat indicator malfunction
- Airbag light on
- Airbag may deploy when child seat is installed
- Child restraint not detected
Common causes
- Faulty child seat detection transponder
- OCS sensor mat failure
- Wiring issue
- Non-compatible child seat
Diagnostic steps
- Scan SRS codes
- Test child seat detection with compatible seat
- Check OCS sensor readings
- Inspect under-seat wiring
Repair notes
Replace OCS mat or child seat detection transponder. Ensure child seat compatibility.
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