P1450 Code: Meaning, Causes, and Symptoms | OBD2 Codes
P1450 – Unable To Bleed Up Fuel Tank Vacuum
P1450 Possible Causes
Blocked EVAP canister or vent solenoid
Kinked or collapsed hose between canister and fuel tank
Faulty Fuel Tank Pressure (FTP) sensor
Fuel filler cap stuck closed, preventing vacuum relief
P1450 Possible Symptoms
Engine Light ON (or Service Engine Soon Warning Light)
Description
The Powertrain Control Module (PCM) 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.