Typical Malfunction Thresholds
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TYPICAL MALFUNCTION THRESHOLDS
| One of the following conditions is met: | - |
| EVAP pressure just after reference pressure measurement start | -1 kPa (7.5 mmHg) or higher |
| Reference pressure (0.02 inch leak pressure) | -1.2 kPa (-9 mmHg) or higher |
| Reference pressure (0.02 inch leak pressure) | Lower than -4.3 kPa (-32 mmHg) |
| Reference pressure (0.02 inch leak pressure) | Not saturated for 60 seconds |
- Purge VSV stuck openPURGE VSV STUCK OPEN MALFUNCTION THRESHOLDS
EVAP pressure when vacuum introduction is complete Higher than reference pressure x 0.2 - Purge VSV stuck closedPURGE VSV STUCK CLOSED MALFUNCTION THRESHOLDS
EVAP pressure change after EVAP canister purge valve is open Less than 0.3 kPa (2.25 mmHg)
TYPICAL MALFUNCTION THRESHOLDS CONDITIONS
| Both of the following conditions set: | - |
| EVAP pressure change when purge flow is started | 0.1 kPa (0.75 mmHg) or less |
| EVAP pressure change during purge flow when EVAP pressure switching valve is ON (closed) | 1 kPa (7.5 mmHg) or less |
P0450 (Pressure sensor fluctuating):
MALFUNCTION THRESHOLDS - P0450 (PRESSURE SENSOR FLUCTUATING)
| Pressure sensor pressure | Less than 42.11 kPa, or more than 123.761 kPa |
P0451 (Pressure sensor noise):
MALFUNCTION THRESHOLDS - P0451 (PRESSURE SENSOR NOISE)
| Frequency that EVAP pressure change is 0.3 kPa or more | 10 times or more in 10 seconds |
P0451 (Pressure sensor stuck):
MALFUNCTION THRESHOLDS - P0451 (PRESSURE SENSOR STUCK)
| EVAP pressure change during reference pressure measurement | Less than 0.8 kPa (6 mmHg) |
P0452 (Pressure sensor low):
MALFUNCTION THRESHOLDS - P0452 (PRESSURE SENSOR LOW)
| Pressure sensor pressure | Less than 42.11 kPa |
P0453 (Pressure sensor high):
MALFUNCTION THRESHOLDS - P0453 (PRESSURE SENSOR HIGH)
| Pressure sensor pressure | More than 123.761 kPa |
"Saturated" indicates that the EVAP (Evaporative Emission) pressure change is less than 0.1 kPa (0.75 mmHg) in 30 seconds.
P0455 (EVAP gross leak):
P0455 (EVAP GROSS LEAK) MALFUNCTION THRESHOLDS
| EVAP pressure when vacuum introduction is complete | Higher than reference pressure x 0.2 |
P0456 (EVAP small leak):
P0456 (EVAP SMALL LEAK) MALFUNCTION THRESHOLDS
| EVAP pressure when vacuum introduction is complete | Between reference pressure and reference pressure x 0.2 |
TYPICAL MALFUNCTION THRESHOLDS
| One of the following conditions is met: | - |
| EVAP pressure when reference pressure measurement started | -1 kPa (7.5 mmHg) or higher |
| Reference pressure (0.02 inch leak pressure) | -1.2 kPa (-9 mmHg) or higher |
| Reference pressure (0.02 inch leak pressure) | Lower than -4.3 kPa (-32 mmHg) |
| Reference pressure (0.02 inch leak pressure) | Not saturated for 60 seconds |
P2419 (Vent valve stuck ON (Open)):
P2419 (VENT VALVE STUCK ON (OPEN)) MALFUNCTION THRESHOLDS
| One of the following conditions is met: | - |
| EVAP pressure when reference pressure measurement started | -1 kPa (7.5 mmHg) or higher |
| Reference pressure (0.02 inch leak pressure) | -1.2 kPa (-9 mmHg) or higher |
| Reference pressure (0.02 inch leak pressure) | Lower than -4.3 kPa (-32 mmHg) |
| Reference pressure (0.02 inch leak pressure) | Not saturated for 60 seconds |
P2420 (Vent valve stuck OFF (Close))
P2420 (VENT VALVE STUCK OFF (CLOSE)) MALFUNCTION THRESHOLDS
| EVAP pressure change after EVAP canister vent valve is ON | Less than 0.3 kPa (2.25 mmHg) |
Case 1:
MALFUNCTION THRESHOLDS (CASE 1)
| Soak timer measurement when ECM CPU clock counts 10 minutes | Less than 7 minutes or more than 13 minutes |
Case 2:
MALFUNCTION THRESHOLDS (CASE 2)
| History ECM had woken up by internal engine off timer | Yes |
| How long vehicle has been soaked | Less than programmed period |
Case 3:
MALFUNCTION THRESHOLDS (CASE 3)
| History ECM had woken up by internal engine off timer | No |
| How long vehicle has been soaked | More than or equal to programmed period |