U0103
Body Control Module Open Circuit
Network · Network & Communication
high
What does this code mean?
The control module detected an open or broken connection in the circuit.
This is a generic OBD-II / UDS code — the meaning is standardized across manufacturers.
Possible symptoms
System not responding
Warning light
No operation
Possible causes
- 1.Broken wire
- 2.Disconnected connector
- 3.Blown fuse
- 4.Failed component
These are possible causes — a professional inspection is required to confirm.
Diagnostic procedure & recommended checks
- Trace the circuit for a break
- Test continuity
- Check the fuse
Recommended actions
- Repair the break
- Replace the fuse or component
Can I drive?
Yes, with warnings
When to contact a professional
Communication faults can affect many systems. Get it diagnosed if it is intermittent.
Related Fix & Solve guides
Diagnostic information is provided for informational purposes and does not replace professional inspection. High-voltage systems must only be serviced by qualified personnel.