Child Seat Detection Circuit
2007-2007 Mazda MX-5 Miata 2.0L I4
The 2007 Mazda MX-5 Miata is equipped with a 2.0L inline-4 engine. Below you'll find detailed b0064 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
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.
Related Codes
Other Body Codes
- B0001Driver Frontal Stage 1 Deployment Control
- B0002Driver Frontal Stage 2 Deployment Control
- B0003Passenger Frontal Stage 1 Deployment Control
- B0004Passenger Frontal Stage 2 Deployment Control
- B0005Driver Knee Airbag Deployment Circuit
- B0006Passenger Knee Airbag Deployment Circuit
- B0007Rear Left Side Airbag Deployment Circuit
- B0008Rear Right Side Airbag Deployment Circuit
- B0010Driver Side Airbag Deployment
- B0011Driver Side Airbag Deployment Circuit Open
B0064 on Other Vehicles
Common Questions
What does code B0064 mean on a 2007-2007 Mazda MX-5 Miata?
B0064 stands for "Child Seat Detection Circuit". Malfunction in the child seat detection system. This system uses the occupancy sensor or a dedicated transponder to detect a child restraint system.
What are the symptoms of B0064 on a Mazda MX-5 Miata?
Common symptoms of B0064 include: Child seat indicator malfunction, Airbag light on, Airbag may deploy when child seat is installed, Child restraint not detected.
What causes B0064 on a 2007-2007 Mazda MX-5 Miata?
Common causes of B0064 include: Faulty child seat detection transponder, OCS sensor mat failure, Wiring issue, Non-compatible child seat.
Last updated: March 2026