Symptoms - Engine Light ON (or Service Engine Soon Warning Light) Possible causes - Blocked EVAP canister or vent solenoid - Kinked or collasped hose between canister and fuel tank - Faulty Fuel Tank Pressure (FTP) sensor - Fuel filler cap stuck closed, preventing vacuum relief Description The Engine Control module (ECM) 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. When is the code detected? Engine Control module (ECM) running system monitor and detected excessive vacuum in the fuel tank/EVAP system
After going to a second ford dealer in my area they scanned for any error codes and fixed my problem under warranty. They changed the Blocked EVAP canister and all this with no appt.
