P0451 - Evaporative Emission System Pressure Sensor/Switch Range/Performance
WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
P0451 - EVAPORATIVE EMISSION SYSTEM PRESSURE SENSOR/SWITCH RANGE/PERFORMANCE
| Description: | This DTC sets for a fuel tank pressure (FTP) sensor range (offset) concern. The FTP sensor output is offset by greater than 1.7 inches of water or less than -1.7 inches of water. | ||
| Possible Causes: |
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| Diagnostic Aids: | With the FTP sensor at atmospheric pressure, the FTP PID normally indicates 0 inches of water. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST HX . | ||