| Detection Criteria | Threshold |
|---|---|
| Signal fluctuation (noise) monitoring | |
| The number of times the output changed +/- 0.667 kPa (+/- 5 mmHg, +/-0.02 in.Hg) or more during 5 to 15 sec. after idling and vehicle stop | 5 times or more |
| No signal change (stuck) monitoring | |
| Fuel tank pressure "no change" time (less than 0.018 kPa (0.135 mmHg, 0.05 in.Hg) change since engine start) | 10 min. or more |
TYPICAL MALFUNCTION THRESHOLDS (P0451)