Its not at that location. Any other place it might be?
Hello, different expert here,
The purge valve is supposed to be in the location shown above but it is down low on a bracket attached to the back of the intake plenum.
If the plenum was removed to replace the sparkplugs the valve may be even lower behind the intake.
Follow the vacuum line forward from the charcoal canister mounted in the center of the vehicle and you will run into the purge valve. It may be that the vacuum line from the valve to the manifold was never attached and that would give a code for the valve.
Let me know how I can help you with this