Typical Malfunction Thresholds

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"Saturated" indicates EVAP pressure change is less than 0.75 mmHg (0.1 kPa) for 30 seconds.

Vent valve stuck ON (P2419)

TYPICAL MALFUNCTION THRESHOLDS (VENT VALVE STUCK ON)

Either of the following conditions is set
0.02 inch leak pressure	Less than -33.75 mmHg (-4.5 kPa), or -7.5 mmHg (-1 kPa) or more
0.02 inch leak pressure	Not saturated

Vent valve stuck OFF (P2420)

TYPICAL MALFUNCTION THRESHOLDS (VENT VALVE STUCK OFF)

EVAP pressure change for 10 seconds when vent valve is turned ON after measurement of 0.02 inch leak pressure

Less than 2.25 mmHg (0.3 kPa)