I'd suggest to clear the codes and "reset" the system (procedure should be in service manual)
THEN run the bike and see what reappears. Again, the factory service manual should offer diagnostic paths for each code. As @Danno suggested, each system component must be tested (again, see factory service manual)
Your prior exercises in "repair by parts replacing" may even complicate matters. Still have all your original parts?
Were the codes present PRIOR to replacing throttle bodies? And AFTER?
This should have been the diagnostic path considered, I recognize a bit late now.
Your "dealer" didn't discover these codes? An actual, authorized Kawasaki dealer? If not....bringing the bike in to a factory schooled Kawasaki dealer tech may be your quickest path to full repair.
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