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Home >> Ford >> 2005 >> Escape Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 35 (Engine Controls - Powertrain DTC Charts And Description - (Hybrid)) >> Diagnostic Trouble Code (DTC) Charts and Descriptions >> DTC P1450: Unable To Bleed Up Fuel Tank Vacuum

DTC P1450: Unable To Bleed Up Fuel Tank Vacuum

WARNING: This page is about a different variant/trim than selected.
P1450 - UNABLE TO BLEED UP FUEL TANK VACUUM

Description:  Monitors the fuel vapor vacuum and pressure in the fuel tank. System failure occurs when the EVAP running loss monitor detects excessive fuel tank vacuum with the engine running (but not at idle).
Possible Causes: 
  • Blockages or kinks in the EVAP canister tube or EVAP canister purge outlet tube (between the fuel tank, EVAP the canister purge valve and the EVAP canister).
  • Fuel filler cap stuck closed (no vacuum relief).
  • Contaminated fuel vapor elbow on the EVAP canister.
  • Restricted EVAP canister.
  • CV solenoid stuck open (partially or fully).
  • Plugged CV solenoid filter.
  • EVAP canister purge valve stuck open.
  • VREF circuit open (harness near FTP sensor, FTP sensor or PCM).
  • Damaged FTP sensor.
Diagnostic Aids:   
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All - - GO to Pinpoint Test HX .
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