Market players had been refraining from selling the yen before the release of the CPI data. But now, they know that the BOJ is unlikely to change their current monetary policy for a while, and the United States continues to have higher interest rates than Japan.

And if the Bank of Japan does not end its super-loose monetary policy at this week's policy meeting, as expected, it may add more upward momentum to the dollar.

While the US Fed appears to have shortened its commitment to rate hikes by deleting the word 'measured', the US monetary authority still implies there are good chances of more rate hikes beyond the March meeting.

Strong U.S. economic data will put a brake on the dollar's downward trend, which was triggered by the Fed minutes. The data could re-ignite expectations the Fed will raise interest rates at least twice this year.

It is beginning to shift its attention back to the strength of US economic fundamentals.

The dollar got some support from the Ministry of Finance's survey, as it ignited concerns about a possible downward revision.