B0059moderate severityBody
Seat Belt Buckle Switch Circuit - Driver
on 2023 Mazda Mazda3 2.0L I4 · AWD
What this code means
Malfunction in the driver seat belt buckle switch circuit. The switch detects whether the driver seat belt is fastened.
Symptoms
- Seat belt warning chime constantly on or off
- Seat belt indicator always on or off
- Airbag staging may be incorrect
- False buckled/unbuckled reading
Common causes
- Faulty buckle switch
- Damaged wiring to buckle
- Debris in buckle mechanism
- Connector corrosion
Diagnostic steps
- Check buckle switch operation with scan tool
- Inspect wiring to buckle
- Test switch with multimeter
- Clean buckle mechanism
Repair notes
Replace seat belt buckle assembly or repair wiring. Do not modify the switch.
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