Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSFORD2010FUSION SEL, 2.5 AREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTIONS (EXCEPT DIESEL & HYBRID)DTC DIAGNOSISDTC P1450: UNABLE TO BLEED UP FUEL TANK VACUUM

2010 Ford Fusion SEL, 2.5 A

DTC P1450: Unable To Bleed Up Fuel Tank Vacuum

2010 Ford Fusion SEL, 2.5 ASECTION DTC P1450: Unable To Bleed Up Fuel Tank Vacuum

DTC 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 evaporative emission (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, the EVAP canister purge valve and the EVAP canister Fuel filler cap stuck closed, preventing vacuum relief Capless fuel tank filler pipe damaged, preventing vacuum relief (if equipped) Contaminated fuel vapor elbow on the EVAP canister Restricted EVAP canister Canister vent (CV) solenoid stuck partially or fully open Plugged CV solenoid filter EVAP canister purge valve stuck open VREF circuit open in the harness near the fuel tank pressure (FTP) sensor, the FTP sensor or the powertrain control module (PCM) Damaged FTP sensor
Diagnostic Aids:	Visually inspect the EVAP canister inlet port, CV solenoid filter, and canister vent hose assembly for contamination or debris. Check EVAP canister purge valve for vacuum leak.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	-	-	GO to PINPOINT TEST HX .

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.