DTC U3004: Accessory Power Relay: Description
WARNING: This page is about a different car, the 2012 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
The power steering control module (PSCM) monitors various inputs and outputs of the electronic power assist steering (EPAS) system in order to keep the system operating at peak capacity.Pinpoint Test M - DTCs C1B00, C200B, C200C, C200D, U0300, U2011, U3000 and U3004: Steering Column Mounted EPAS - Steering Angle Sensor, Steering Shaft Torque Sensor 1, Steering Shaft Torque Sensor 2, Motor and Control Module - Failure or Erratic