P0451 (Noise monitor):
TYPICAL ENABLING CONDITIONS - P0451 (NOISE MONITOR)
| Monitor runs whenever these DTCs not present | See LIST OF DISABLE A MONITOR |
| Atmospheric pressure (absolute pressure) | 70 kPa (525 mmHg) or more, less than 110 kPa (825 mmHg) |
| Battery voltage | 10.5 V or more |
| Intake air temperature | 4.4 to 35°C (40 to 95°F) |
| EVAP pressure sensor malfunction (P0450, P0452, P0453) | Not detected |
| Either of following conditions met | A or B |
| A. Engine | Running |
| B. Time after engine stopped | 5 hours |
Example of restart time
RESTART TIME
| First time | 7 hours |
| Second time | 9 hours and 30 minutes |