Lost Communication with Body Control Module
Communication with the body control module has been lost.
Informational only. Consult a qualified mechanic.
- Faulty BCM
- CAN bus wiring
- Fuse issue
- Water damage
Check fuses. Various body functions may be affected.
What does U0140 mean?
The U0140 OBD-II diagnostic trouble code (DTC) indicates: lost communication with body control module. This is a high-severity network code that your vehicle's onboard diagnostics system triggers when communication with the body control module has been lost. If your check engine light is on with this code, the vehicle is generally safe to drive, but you should have it inspected soon.
Use Your Service Book to log this diagnostic trouble code to your vehicle's service history, track repairs, and get maintenance reminders — all for free.
Related Articles
Track codes on your vehicle — sign up free
Log OBD-II codes, get maintenance reminders, and keep your complete service history.