Malfunction Threshold

The misalignment of zero point pressure inside the fuel tank is 0.7 kPa (0.2 inHg, 5 mmHg) or more.
The output from the FTP sensor flickering is 3.1 seconds or more.
The change rate of the pressure rise slope inside the fuel tank is 2.8 or more.
The change rate of the pressure descending slope inside the fuel tank is 0.8 or more.
The barometric pressure is stable for at least 29 minutes, 58 seconds.