Typical Malfunction Thresholds
"Saturated" indicates that the EVAP pressure change is less than 0.75 mmHg (0.1 kPa) in 30 seconds.
TYPICAL MALFUNCTION THRESHOLDS
| One of following conditions met | - |
| FTP when 4 seconds after reference pressure measurement began | More than -7.5 mmHg (-1 kPa) |
| Reference pressure | Less than -36.4 mmHg (-4.85 kPa) |
| Reference pressure | -7.9 mmHg (-1.057 kPa) or more |
| Reference pressure | Not saturated |
| Reference pressure difference between first and second | 5.3 mmHg (0.7 kPa) or more |
- P0450: Pressure sensor chatteringTYPICAL MALFUNCTION THRESHOLDS - P0450: PRESSURE SENSOR CHATTERING
EVAP pressure Less than 42.11 kPa (316 mmHg) or more than 123.761 kPa (928 mmHg) - P0451: Pressure sensor noiseTYPICAL MALFUNCTION THRESHOLDS - P0451: PRESSURE SENSOR NOISE
Pressure variation indicated by pressure sensor in 10 seconds More than +/- 0.3 kPa (+/- 2.25 mmHg) 10 times - P0451: Pressure sensor stuckTYPICAL MALFUNCTION THRESHOLDS - P0451: PRESSURE SENSOR STUCK
0.02 inch leak pressure variation indicated by pressure sensor in 10 seconds Less than 0.65 kPa (4.87 mmHg) - P0452: Pressure sensor low voltageTYPICAL MALFUNCTION THRESHOLDS - P0452: PRESSURE SENSOR LOW VOLTAGE
EVAP pressure Less than 42.11 kPa (316 mmHg) - P0453: Pressure sensor high voltageTYPICAL MALFUNCTION THRESHOLDS - P0453: PRESSURE SENSOR HIGH VOLTAGE
EVAP pressure More than 123.761 kPa (928 mmHg)
"Saturated" indicates that the EVAP pressure change is less than 0.75 mmHg (0.1 kPa) in 30 seconds.
P0455: EVAP gross leak
TYPICAL MALFUNCTION THRESHOLDS
| FTP when vacuum introduction complete | Higher than reference pressure x 0.2 |
P0456: EVAP small leak (0.02 inch leak)
TYPICAL MALFUNCTION THRESHOLDS - P0456
| FTP when vacuum introduction was complete | Between 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) |