Steering Angle Sensor Power Supply Malfunction

DTC C0071 STEERING ANGLE SENSOR POWER SUPPLY MALFUNCTION
DTC DETECTING CONDITION:
Defective steering angle sensor

TROUBLE SYMPTOM:
^ ABS does not operate.
^ VDC does not operate.

NOTE:
^ Warning light does not illuminate though problem is detected.
^ The ABS and VDC operate normally if voltage returns.