DTC 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 .