Diagnostic Aids
WARNING: This page is about a different car, the 2020 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
DTC U023A: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 IPMA concern.
Do not install a new PSCM as part of the repair for a PSCM DTC U023A:00.
The presence of DTC U023A:00 prevents the lane keep assist function (if equipped) from activating. If set during an lane keeping event, the event is terminated and the lane keep assist system is deactivated.