Diagnostic Aids
WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
DTC U0140:00 indicates a possible failure of the HS-CAN which can be due to a circuit fault in the HS-CAN, the PSCM wiring harness or a BCM concern.
Do not install a new PSCM as part of the repair for a PSCM DTC U0140:00.