* Uncertainty on U.S. rates, Greece outlook
* Yen gains suggest markets still nervous
* Euro off 9-month low but sentiment still fragile
* Bernanke testimony later this week in focus (Updates prices, adds comments)
By Steven C. Johnson and Luciana Lopez
NEW YORK, Feb 22 (Reuters) - The dollar edged higher against the euro on Monday but fell against the yen as markets worried about fiscal strains in Europe and weighed the possibility of higher U.S. interest rates later this year.
The dollar strengthened last week after the Federal Reserve raised the discount rate that banks are charged for emergency loans. Investors, surprised by the timing of the move, saw a potential end to the easy money regime that hurt the dollar last year.
Policymakers quickly sought to dispel that notion, though, saying the benchmark federal funds rate, which is the Fed's main monetary policy tool, will remain low for some time.
Fed Chairman Ben Bernanke is expected to issue similar reassurances in testimony to Congress later this week.
"The Fed officials' jobs are going to be to talk to the market about how the discount rate should not be seen as a policy tightening," said Meg Browne, senior currency strategist at Brown Brothers Harriman in New York. "Right now, the market's mentality is still to sell the euro and sterling on dips, but I think there is a risk still of a correction higher."
Worries about heavily indebted euro zone countries, such as Greece, have recently weighed on the single currency.
While the euro recovered from last week's nine-month low beneath $1.35, it was still down slightly on the day as investors worried about Greece's ability to get its budget deficit under control.
The euro was changing hands at $1.3588 <EUR=>, down 0.2 percent though above last week's nine-month low of $1.3442, according to Reuters data. It was down 0.8 percent at 123.80 yen <EURJPY=> while the dollar was off 0.6 percent at 91.08 yen <JPY=>.
Greece's budget situation "is one of those ongoing sagas that have yet to find any resolution," said Kathy Lien, director of currency research for GFT in New York.
Weekend reports that Germany had prepared plans for euro zone countries to provide aid to Athens provided only a brief boost. A German finance ministry spokesman said on Monday that the country has made no decisions on a lifeline for Greece. For details see [
] and [ ]"Serious headwinds with regard to Greece" mean the path of least resistance for the euro is still downward, said Brian Dolan, chief currency strategist at Forex.com in Bedminster, New Jersey, though a break above $1.3650 might change that.
The euro has lost more than 10 percent against the dollar since December.
"This is just a pause in the overall euro downtrend. The moves we have seen are flow-driven and I would expect more dollar strength to come," said Westpac currency analyst Lauren Rosborough.
Data from Europe last week showed currency speculators raised net euro short positions to a record high. <-------------------------------------------------
For a graphic on euro positioning, click
http://graphics.thomsonreuters.com/0210/EZ_ERCFTC0210.gif ------------------------------------------------->
In other trading, sterling trade was choppy, dipping into negative territory before gaining 0.03 percent to $1.5476 <GBP=>
Yen gains showed the recovery in risk appetite was a tentative one. High-yielding currencies such as the Australian and New Zealand dollars, which tend to do well when markets are optimistic about growth, both fell against the low-yielding yen.
Analysts said the market will focus on Bernanke's testimony on Wednesday and Thursday for clues about the future direction of monetary policy.
BNY Mellon strategist Michael Woolfolk said last week's discount rate increase "was not a signal of an imminent hike in the fed funds target rate, but it's clearly a signal that they wish to spend the next six months preparing for one." (Additional reporting by Naomi Tajitsu in London; Editing by Dan Grebler)