DTC P0451: - Evaporative Emission System Pressure Sensor/Switch Range/Performance

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DTC 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:	Intermittent open or short in the FTP sensor or the FTP sensor signal Contaminated or damaged sensor Damaged powertrain control module (PCM)
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 .