Steering apparatus and method of controlling the same

A steering apparatus comprising:

• a steering wheel provided in a vehicle;
• a steering sensor configured to output first and second detection signals corresponding to a rotational displacement of the steering wheel;
• and
• a controller configured to identify the occurrence of an error in the steering sensor caused by an external magnetic field based on the first and second detection signals,
• wherein the controller is configured to identify the occurrence of the error in the steering sensor by comparing a change amount of at least one of the first and second detection signals within a reference time with a reference change amount of at least one of the first and second detection signals within the reference time in response to start-on of the vehicle and comparing a change rate of at least one of the first and second detection signals within the reference time with a reference change rate of at least one of the first and second detection signals within the reference time.