U0148
NetworkModule Communicationlow severityLost Communication with Seat Control Module B
What U0148 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
Where to start: Check connector under passenger seat. Same diagnosis approach as driver seat module.
🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
✓ ANCEL official store
Serious DIY~$100
BlueDriver Pro →
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
SHOP FAVORITEShop-grade tablet~$300
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Related Codes
Community Confirmed Fixes
No confirmed fixes yet for this code. Be the first to contribute!
Submit a FixFound a Fix for U0148?
Help other technicians by sharing what worked on your vehicle.
Submit Your Fix