The euro slipped across the board on Wednesday, prodded lower after Federal Reserve Chairman Ben Bernanke highlighted the possibility that the US central bank's dollar funding facility would not last forever. The single currency trimmed losses as European shares rallied, but its recovery was dashed after a poorly received German debt auction underlined overall negative sentiment on the euro zone. By 1003 GMT, the euro had slipped 0.4 percent on the day to $1.2315, having hit a session trough of $1.2263. A fall below $1.2143 touched last week would mark its weakest since April 2006. Against the yen, the euro was down 0.5 percent at 111.13 yen. On Tuesday, it tumbled to 108.83 yen.