P0454 - Evaporative Emission System Pressure Sensor/Switch Intermittent
WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
P0454 - EVAPORATIVE EMISSION SYSTEM PRESSURE SENSOR/SWITCH INTERMITTENT
| Description: | The fuel tank pressure changes greater than 14 inches of water in 0.10 seconds. | |||
| Possible Causes: |
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| Diagnostic Aids: | Monitor the FTP PID and note if it changes from above 15 inches of water to below minus (-) 15 inches of water often in 1 minute. | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory | |
| All | - | - | refer to PINPOINT TEST Z . | |