P1450 Isuzu Unable To Bleed Up Fuel Tank Vacuum

P1450 Isuzu Unable To Bleed Up Fuel Tank Vacuum

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.
    • Symptoms
    – Engine Light ON (or Service Engine Soon Warning Light)
    P1450 Isuzu 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).

    Isuzu Vehicle:2013 Isuzu,2012 Isuzu,2011 Isuzu,2010 Isuzu,2009 Isuzu,2008 Isuzu,2007 Isuzu,2006 Isuzu,2005 Isuzu,2004 Isuzu,2003 Isuzu,2002 Isuzu,2001 Isuzu,2000 Isuzu,1999 Isuzu,1998 Isuzu,1997 Isuzu,1996 Isuzu,Isuzu Rodeo,Isuzu Trooper,Isuzu Ascender
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