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Home >> Ford >> 2012 >> Explorer Base, 3.5 8, AWD, 6F50 >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls (Except Diesel & Hybrid) - Powertrain DTC Descriptions - DTC P0193 - P0563 >> DTC P0453: Evaporative Emission System Pressure Sensor/Switch High

DTC P0453: Evaporative Emission System Pressure Sensor/Switch High

P0453 - EVAPORATIVE EMISSION SYSTEM PRESSURE SENSOR/SWITCH HIGH

For Vehicles With NVLD Module 
Description:  This DTC sets when the natural vacuum leak detection (NVLD) module pressure switch voltage is out of range high.
Possible Causes: 
  • NVLD module GND circuit open
  • Damaged NVLD module
Diagnostic Aids: 
For All Others 
Description:  This DTC sets when the signal average jumps above a minimum allowable calibrated parameter.
Possible Causes: 
  • Contamination internal to the fuel tank pressure (FTP) sensor connector
  • FTP circuit open
  • FTP circuit short to voltage
  • FTPREF or VREF circuit short to voltage
  • SIGRTN circuit open
  • Damaged FTP sensor
Diagnostic Aids:  An FTP voltage PID reading greater than 4.85 volts with the ignition ON, engine OFF or with the ignition ON, engine running, indicates a concern is present.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
Fiesta GO to PINPOINT TEST HZ .
All others GO to PINPOINT TEST HX .
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