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That depends on your definition of "Sarcophaga". (Socrates could have made this point). If you mean - which you probably do - Sarcophaga s.l., so all Sarcophagini except for Blaesoxipha s.l., the answer is yes !!
There are several Blaesoxipha and Agriini with yellow palpi, however, all of these have a very different abdominal pattern (at least, to my eyes).

So, indeed, if a 'Sarcophaga' has bright yellow palpus, your first thought should be Eurychaeta. That is how to find them ! (In the field, in my limited experience, Eurychaeta gives an impression in between Sarcophaga and Brachycoma, hence, you already are in doubt. The yellow palpus then is a big clue).

THeo