Failure diagnosis method for hall sensor

Failure to recognize that the phase error signal of the Hall sensor Hall sensor trouble diagnosis method according to the present technique the control unit (S100); If failure detection of whether step (S100) performs a result, the failure signal, the duty increasing step of setting a predetermined increase the drive duty of the oil pump (S110); And after the duty increasing step (S110), failure diagnostic step (S120) for performing failure diagnosis of the Hall sensor, may include a.