The euro slid against the dollar and the yen after Britain's Daily Telegraph reported that Germany's financial regulator BaFin had warned that toxic debt of the country's banks would blow up "like a grenade" unless they took advantage of government's bad bank plans to prepare for next phase of crisis.
Traders said speculators used the report as an excuse to sell the European single currency after its jump of about 8 percent in just a month against the dollar, from $1.30 to $1.40.
"The euro, the Australian dollar and sterling all have risen to levels where people would feel they have run their course for now," said Osamu Takashima, chief currency analyst at Bank of Tokyo-Mitsubishi UFJ. "It's understandable to see profit-taking on them."
Activity picked up in Asia as U.S. and British financial markets will resume trading later in the day after a three-day weekend.
The dollar index .DXY, a gauge of the greenback's performance against six other major currencies, edged up 0.2 percent to 80.146.
The index struck a five-month trough of 79.805 last week when concern that U.S. government debt may lose its AAA rating prompted investors to sell the world's reserve currency.
The euro fell to $1.3986
The euro was also under pressure a day after the German-based Ifo think tank's business climate index on Monday fell short of market expectations, suggesting that any recovery in the euro zone's biggest economy will take more time.
The European single currency fell to 132.49 yen

