Heated Mirror Circuit
2003-2003 Mazda B2300 2.3L I4
The 2003 Mazda B2300 is equipped with a 2.3L inline-4 engine. Below you'll find detailed b0223 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Malfunction in the heated mirror circuit. The mirror defroster element is not functioning.
Symptoms
- Mirrors do not defrost
- Mirror stays fogged in cold/humid conditions
- Heated mirror indicator not working
Common Causes
- Burnt out mirror heating element
- Faulty heated mirror switch
- Wiring damage
- Relay failure
- BCM output issue
Diagnostic Steps
- Test heated mirror switch
- Check heated mirror relay
- Measure voltage at mirror heater connector
- Test heater element resistance
- Check BCM output
Repair Notes
Replace mirror glass with integrated heater or repair wiring.
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
- B0010Driver Side Airbag Deployment
- B0011Driver Side Airbag Deployment Circuit Open
- B0012Driver Side Airbag Deployment Circuit Short to Ground
- B0013Driver Side Airbag Deployment Circuit Short to Battery
B0223 on Other Vehicles
Common Questions
What does code B0223 mean on a 2003-2003 Mazda B2300?
B0223 stands for "Heated Mirror Circuit". Malfunction in the heated mirror circuit. The mirror defroster element is not functioning.
What are the symptoms of B0223 on a Mazda B2300?
Common symptoms of B0223 include: Mirrors do not defrost, Mirror stays fogged in cold/humid conditions, Heated mirror indicator not working.
What causes B0223 on a 2003-2003 Mazda B2300?
Common causes of B0223 include: Burnt out mirror heating element, Faulty heated mirror switch, Wiring damage, Relay failure, BCM output issue.
Last updated: March 2026