B0203
Rear Right Power Window Motor Circuit
2003-2003 Mazda B2300 2.3L I4
Low SeverityBodyGeneric (SAE)
The 2003 Mazda B2300 is equipped with a 2.3L inline-4 engine. Below you'll find detailed b0203 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Malfunction in the rear right power window motor circuit.
Symptoms
- Rear right window not working
- Slow window movement
- Motor hums without movement
Common Causes
- Faulty motor
- Broken regulator
- Switch failure
- Wiring damage
Diagnostic Steps
- Check fuse
- Test switch
- Direct-power motor
- Inspect regulator
Repair Notes
Replace motor or regulator assembly.
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
B0203 on Other Vehicles
Common Questions
What does code B0203 mean on a 2003-2003 Mazda B2300?
B0203 stands for "Rear Right Power Window Motor Circuit". Malfunction in the rear right power window motor circuit.
What are the symptoms of B0203 on a Mazda B2300?
Common symptoms of B0203 include: Rear right window not working, Slow window movement, Motor hums without movement.
What causes B0203 on a 2003-2003 Mazda B2300?
Common causes of B0203 include: Faulty motor, Broken regulator, Switch failure, Wiring damage.
Last updated: March 2026