How does the EVAP system work on a Ford F150?
The EVAP system captures all fuel vapor from the fuel tank and sends them to the engines intake in order to be ignited in the normal combustion process. When the EVAP control system vent control circuit no longer responds to the ECU, it will throw the P0446 OBDII Code, and the service engine soon light will illuminate.
How does the evaporative emission control system work?
When the module deems conditions to be correct, it commands a solenoid to open the purge valve. Opening the purge valve creates a vacuum that pulls fresh air through the vapor canister. The fresh air picks up the fuel vapors and delivers them to the engine to be burned during the normal combustion process.
What is the trouble code on a Ford Escape?
P0446 Ford Escape. One of the most common trouble codes with the Ford Escape is the P0446 code. This trouble code references a number that is given to you when you plug your Escape into a OBDII scanner. P0446 Indicates that there is a fault in the evaporative emission control system.
What are the components of the EVAP system?
The powertrain control module (PCM) uses three simple but robust components to purge gas vapors and test the gas vapor system for leak integrity. The canister purge solenoid (CPS), canister vent solenoid (CVS) and fuel tank pressure sensor (FTPS) are the heart of the system.
How does the EVAP system work in a Ford?
P0443 FORD Description The Evaporative Emission System (EVAP) canister purge volume control solenoid valve uses a ON/OFF duty to control the flow rate of fuel vapor from the EVAP canister. The EVAP canister purge volume control solenoid valve is moved by ON/OFF pulses from the Engine Control Module (ECM).
Where is the EVAP canister canister vent control valve?
P0446 FORD Description The Evaporative System (EVAP) canister vent control valve is located on the EVAP canister and is used to seal the canister vent. This solenoid valve responds to signals from the Engine Control Module (ECM). When the ECM sends an ON signal, the coil in the solenoid valve is energized.
How to diagnose Ford EVAP purge control circuit?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. How much do you know about cars? What does this mean? The cost of diagnosing the P0443 FORD code is 1.0 hour of labor.
P0446 Ford Escape. One of the most common trouble codes with the Ford Escape is the P0446 code. This trouble code references a number that is given to you when you plug your Escape into a OBDII scanner. P0446 Indicates that there is a fault in the evaporative emission control system.