DTC U0140 Lost Communication With Body Control Module: Description

WARNING: This page is about a different car, the 2017 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

The PSCM monitors the HS-CAN messages when the ignition has been on for more than 5 seconds, the voltage to the PSCM is greater than 6.5 volts and there are no DTCs present inhibiting PSCM operation.

DTC U0140:00 (Lost Communication with the Body Control Module: No Sub Type Information) - This DTC sets when communication between the PSCM and the BCM fails. The BCM sends the following messages to the PSCM; alternator fault, ignition status, trailer lamp connectivity, and vehicle configuration. If these messages are missing for 5 seconds or more, DTC U0140:00 is set.