U0148low severityNetwork
Lost Communication with Seat Control Module B
on 2021 Subaru Legacy 2.5L H4 · AWD
What this code means
Cannot communicate with the passenger seat control module.
Symptoms
- Passenger power seat inoperative
- Passenger seat memory not working
- Passenger seat heater not controlled
Common causes
- Seat module failure
- Wiring issue under seat
- Power loss to module
- Fuse blown
Diagnostic steps
- Check seat module fuse
- Test power and ground
- Inspect wiring
- Check connector under seat
Repair notes
Check connector under passenger seat. Same diagnosis approach as driver seat module.
Other Network codes on this vehicle
U0001
High Speed CAN Communication Bus
U0002
High Speed CAN Communication Bus Performance
U0003
High Speed CAN Communication Bus (+) Open
U0004
High Speed CAN Communication Bus (+) Low
U0005
High Speed CAN Communication Bus (+) High
U0006
High Speed CAN Communication Bus (-) Open
U0007
High Speed CAN Communication Bus (-) Low
U0008
High Speed CAN Communication Bus (-) High
U0009
High Speed CAN Communication Bus Shorted Together
U0010
Medium Speed CAN Communication Bus