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P0453 - EVAP System Pressure Sensor/Switch A Circuit High

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DTC DESCRIPTION P0453 - EVAP SYSTEM PRESSURE SENSOR/SWITCH A CIRCUIT HIGH

Description:  This DTC sets when the fuel tank pressure (FTP) sensor signal average jumps above a minimum allowable calibrated parameter.
Possible Causes: 
  • Contamination internal to the FTP sensor connector
  • FTP circuit open
  • FTP circuit short to voltage
  • 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 
All GO to Pinpoint Test HX.
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