The code 1541 is an an internal code used by the IRS to identify returns that have been "Delayed". The doesn't mean there is something wrong with your return, it could simply be that the IRS has an overflow of returns at this time and is behind schedule.
There are different IRS reasons accounting for the 1541 reference number. You can contact the
IRS directly and mention the reference the code 1541 to them and they can provide you with further details. You can go here
https://www.irs.gov/help/telephone-assistance for their contact phone number.
