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Home >> Ford >> 2009 >> Taurus X SEL, FWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid) >> DTC Diagnosis >> DTC P0454: - Evaporative Emission System Pressure Sensor/Switch Intermittent

DTC P0454: - Evaporative Emission System Pressure Sensor/Switch Intermittent

DTC 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: 
  • Intermittent open or short in the fuel tank pressure (FTP) sensor or the FTP sensor signal
  • Contaminated or damaged sensor
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 .