Malfunction Threshold

The FTP sensor output fluctuates by 0.7 kPa (0.2 inHg, 5 mmHg) or more, or -0.7 kPa (-0.2 inHg, -5 mmHg) or less, for at least 8.0 seconds.

The FTP sensor output value is -1.4 kPa (-0.4 inHg, -10 mmHg) or less for at least 8.0 seconds.