DTC P0454: Evaporative Emission System Pressure Sensor/Switch Intermittent
WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, 2011 Ford Fusion, 2010 Mercury Milan, and 2010 Ford Fusion. 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 | GO to PINPOINT TEST Z . | ||