Passenger Cooled Seat Circuit
2010-2010 Mazda Mazda3 2.5L I4
The 2010 Mazda Mazda3 is equipped with a 2.5L inline-4 engine. Below you'll find detailed b0285 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Malfunction in the passenger ventilated/cooled seat fan circuit.
Symptoms
- Passenger cooled seat not working
- Fan not running
- Intermittent cooling
- Weak airflow from seat
Common Causes
- Faulty fan motor
- Blocked air passages
- Wiring issue
- Control module failure
Diagnostic Steps
- Test fan motor
- Check air passages
- Inspect wiring
- Test control output
Repair Notes
Replace ventilated seat fan or clear obstructions.
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
B0285 on Other Vehicles
Common Questions
What does code B0285 mean on a 2010-2010 Mazda Mazda3?
B0285 stands for "Passenger Cooled Seat Circuit". Malfunction in the passenger ventilated/cooled seat fan circuit.
What are the symptoms of B0285 on a Mazda Mazda3?
Common symptoms of B0285 include: Passenger cooled seat not working, Fan not running, Intermittent cooling, Weak airflow from seat.
What causes B0285 on a 2010-2010 Mazda Mazda3?
Common causes of B0285 include: Faulty fan motor, Blocked air passages, Wiring issue, Control module failure.
Last updated: March 2026