Typical Malfunction Thresholds
"Saturated" indicates that the EVAP pressure change is less than 0.75 mmHg (0.1 kPa) in 30 seconds.
P1421: EVAP gross leak
TYPICAL MALFUNCTION THRESHOLDS
| EVAP pressure when vacuum introduction complete | Higher than reference pressure x 0.2 |
P1420: EVAP small leak
TYPICAL MALFUNCTION THRESHOLDS
| EVAP pressure when vacuum introductions complete | Between conditions 1 and 2 |
| Condition 1 | Higher than second reference pressure |
| Condition 2 | Lower than reference pressure x 0.2 |
| Atmospheric pressure (absolute pressure) | 70 kPa (525 mmHg) or more, and less than 110 kPa (825 mmHg) |