B1004low severityBody
TPMS Sensor Circuit - Spare Tire
on 2009 Subaru Forester 2.5L H4 · AWD
What this code means
Malfunction in the spare tire TPMS sensor (vehicles equipped with spare tire monitoring).
Symptoms
- TPMS warning light on
- Spare tire pressure not monitored
- TPMS system fault indicator
Common causes
- Dead spare tire sensor battery
- Spare tire sensor removed
- Spare tire replaced without sensor
- Sensor not programmed
Diagnostic steps
- Check if vehicle monitors spare tire pressure
- Trigger spare sensor
- Verify sensor registration
- Inspect spare tire sensor
Repair notes
Replace spare tire TPMS sensor if equipped. Some vehicles monitor spare tire pressure.
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
B0010
Driver Side Airbag Deployment
B0011
Driver Side Airbag Deployment Circuit Open