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.