DTC U0140: Lost Communication With Body Control Module: Description

WARNING: This page is about a different car, the 2016 Lincoln MKS. 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 9 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 a battery load shed message to the PSCM, if this message is missing for 5 seconds or more, DTC U0140:00 is set.