DTC P0453: - Evaporative Emission System Pressure Sensor/Switch High

DTC P0453: - EVAPORATIVE EMISSION SYSTEM PRESSURE SENSOR/SWITCH HIGH

Description:	The powertrain control module (PCM) monitors the evaporative emission (EVAP) control system fuel tank pressure (FTP) sensor input signal to the PCM. The test fails when the signal average jumps above a minimum allowable calibrated parameter.
Possible Causes:	FTP circuit open VREF short to VPWR FTP circuit short to VREF or VPWR SIG RTN circuit open Damaged FTP sensor
Diagnostic Aids:	An FTP voltage parameter identification (PID) reading greater than 4.85 volts with the ignition on, engine off or 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 .