Diagnostic Aids
WARNING: This page is about a different car, the 2015 Lincoln MKS. However, it is still accessible from the selected car via links, so may be relevant.
DTC U0428:00 indicates a concern with the steering angle information sent from the SCCM. The module reporting this DTC is not the problem module. Do not install a new PSCM as part of the repair for PSCM DTC U0428:00.
When the PSCM sets this DTC power steering assist is present, but pull compensation, drift compensation and active parking assist are disabled.
The presence of DTC U0428:00 prevents the active park assist system (if equipped) from activating. If set during an active park assist event, the event is terminated and the active park assist system is deactivated.