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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2090 (Engine Controls - Powertrain DTC Charts And Descriptions (Except Diesel & Hybrid)) >> DTC Diagnosis >> P0454 - Evaporative Emission System Pressure Sensor/Switch Intermittent

P0454 - Evaporative Emission System Pressure Sensor/Switch Intermittent

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2008 Mercury Sable, 2008 Mercury Mountaineer, 2008 Mercury Milan, 2008 Mercury Mariner, and 2008 Mercury Grand Marquis. 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: 
  • 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   - - refer to PINPOINT TEST Z .
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