Zajac, as always, words and phrees are used in different ways sometimes with a very similar meaning and sometimes quite different. In my opinion, you need to provide more context and avoid making assertions about what things "mean" by themselves.

For example, if my friend returned from a bicycle repair shop and said "My bike is fixed" or "My bike has been fixed", I would regard them as the same, her bike had a fault and now it does not have that fault.

Notice that you can use fixed as verb or as adjective.
"My bike is fixed" --- this can be seen as adjectival and refers to the state of the bike AFTER repair.
"My bike is fixed every time it breaks down" --- verb concerning the process of doing the repair.