Diagnostic Aids
WARNING: This page is about a different car, the 2013 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
When DTC U0300:00 is set, the PSCM will remove steering assist, and enter into a manual mode and transmit an invalid steering angle message over the HS-CAN bus. The PSCM sends a message to the instrument panel cluster (IPC) to display POWER STEERING ASSIST FAULT in the message center.