Lost Communication With BCM

Q: What does code U0140 mean?

Lost Communication With BCM: Communication with the body control module has been lost. Lighting, locks, and other body functions affected.

Network Code · High

What does U0140 mean?

Communication with the body control module has been lost. Lighting, locks, and other body functions affected.

System: Module Communication

U0140 is a network diagnostic trouble code indicating lost communication with bcm. This code is classified as high severity, which means: address soon — may cause further damage.

Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your vehicle.