C056E 4B
WARNING: This page is about a different car, the 2009 Pontiac Torrent and 2009 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
This DTC will set if the PSCM, motor or torque sensor has not been calibrated using the Steering Wheel Angle and Torque Calibration procedure.