Change purge valve

no engine told and there are 3 answers. for 3 engines
replace it?
Evap
purge
3.4L

1. Disconnect the evaporative emission (EVAP) canister purge valve electrical connector.
2. Disconnect the EVAP canister purge pipe from the EVAP canister purge valve.
3. Disconnect the vacuum supply hose from the EVAP canister purge valve.
4. Remove the EVAP canister purge valve bolt.
5. Remove the EVAP canister purge valve from the intake manifold.

https://garatos.com/p1443-ford-code/

see if this link is any use to you.
2003 lexus gs300 Where is the purge valve located Google Search

Edward, Check the attached links,instruction and guides on how to change your purge valve. Good luck. "I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
Purge valve solenoid repair on 2007 trailblazer
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2002 GMC Envoy evap purge solenoid

code p1446 refers to evaporative emission (EVAP) canister purge valve ---voltage low===causes wiring---EVAP canister purge valve --ECM
try replacing the purge valve

PO449-- Evap Vent Valve/Solenoid Circuit Malfunction

PO441--Evap Purge Valve Incorrect Flow
PO 443,444,445 Purge Control Valve Issues


There was no reason to change the gas cap or
purge control valve

Didn't Google the code & use it correctly to diagnose
the problem

Smells Like Change Symptom: Gas Fumes Change When: Driving Change Where: Passenger Compartment Change -->
Priority Action Part Type Cause 1 Inspect Fuel Line Assembly Loose or Damaged Fuel Line or Connector. 2 Inspect Fuel Filter Leaking Fuel Filter. 3 Inspect Fuel Tank PUNCTURED or Damaged Fuel Tank. 4 Inspect Canister Purge Valve Faulty Canister Purge Valve is Leaking. 5 Inspect Carburetor Dirty and Improperly FunctioningCarburetor. 6 Inspect Fuel Injector Dirty or Worn Fuel Injectors.

PCV valve would have nothing to do with it !
P1443 - Very Small Or No Purge Flow Condition A fuel tank pressure change greater than a minus (-) 7 inches of H 2 O in 30 seconds has occurred with purge (fuel vapor) flow less than 0.02 pounds per minute.

• Blocked fuel vapor hose between EVAP canister purge valve and FTP sensor.
• Blocked fuel vapor hose between EVAP canister purge valve and engine intake manifold.
• Blocked vacuum hose between EVAP canister purge valve-solenoid and engine intake manifold.
• EVAP canister purge valve stuck closed (mechanically).

Check for blockages between the fuel tank, EVAP canister purge valve and engine intake manifold. Check obstructions in the EVAP canister purge valve diaphragm and ports.
Suggest you buy a repair manual if you want to try an fix yourself .Or Go to ford web site Ford Oem1stop com an pay 29 bucks for 72 hours for repair info . Or take it to a qualified repair shop an have it smoke tested . Or goolge purge valve for a pic. an see if you can find it under the hood .

P1443 - EVAP Control System / Vacuum System Purge Control Solenoid Or Purge Control Valve Fault. A fuel tank pressure change greater than minus (-) 7 inches of water in 30 seconds occurred with a purge (fuel vapor) flow at less than 0.02 pounds per minute.

Possible Causes:

Blocked fuel vapor hose between the EVAP canister purge valve and the FTP sensor.

Blocked fuel vapor hose between the EVAP canister purge valve and the engine intake manifold.

Blocked vacuum hose between the EVAP canister purge valve solenoid and the engine intake manifold.

EVAP canister purge valve stuck closed (mechanically).

Possible Solution:
Check for blockages between the fuel tank, the EVAP canister purge valve, and the engine intake manifold. Check for obstructions in the EVAP canister purge valve diaphragm and ports.

The canister is on the passengers side near the firewall if I recall correctly.

the purge valve on the engine the lines might be crossed need code to be more helpful