U0147low severityNetwork
Lost Communication with Seat Control Module A
on 2004 Toyota MR2 1.8L I4 · FWD
What this code means
Cannot communicate with the driver seat control module.
Symptoms
- Power seat not adjustable
- Seat memory not working
- Seat heater/cooler from module not working
- Seat position not stored
Common causes
- Seat module failure
- Wiring in seat track area
- Module power loss
- Fuse blown
- Connector under seat disconnected
Diagnostic steps
- Check seat module fuse
- Test power and ground
- Inspect wiring under seat
- Check connector under seat
- Try direct module communication
Repair notes
Check under-seat connector first, often disconnected during cleaning or item retrieval.
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