1995 EGR system malfunction

#1
I have a CEL on and the trouble code is 71 on my 1995 Corolla.
I have pressure checked the components after watching a Youtube video and the components I've checked seem to be working correctly. (
).
Still have a CEL on. Not sure what to do, I don't really want to spend $300 for an EGR valve to find that I have another problem.
Any thoughts, I would greatly appreciate the advice.
 
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