Patent ID: 6944531

Claim:
An air flow sensor failure determination apparatus for determining a failure of an air flow sensor for an internal combustion engine in which an air flow sensor, a throttle and a pressure sensor disposed downstream of the throttle are provided in an air induction passage, the air flow sensor failure determination apparatus comprising: a first calculating unit for calculating a first induction air volume based on an output signal from the air flow sensor; a second calculating unit for calculating a second induction air volume based on an output from the pressure sensor; and a determination unit for determining a failure of the air flow sensor based on a comparison between the first induction air volume and the second induction air volume; wherein the air flow sensor failure determination apparatus further comprises: means for compensating the second induction air volume for a variation in air volume charged downstream of the throttle as an opening position of the throttle changes, wherein the determination unit determines a failure of the air flow sensor based on a comparison between the second induction air volume compensated by the compensating means and the first induction air volume.