Provosion for efiling revised return for ay 2018-19

Suppose I efile my return using ITR-2 before due date. If I detect some error in tax calculation after due date, can I efile a revised return with correct income tax details? I know this was possible earlier but not sure if the rules had changed starting AY 2018-19. Will I have to pay a file of Rs 5000 + interest for efiling revised return?