(Reuters) - Honda Motor Co Ltd is expanding a recall in North America to include more than 600,000 Accord mid-size sedans to address a potential power steering fluid leak problem that could cause a fire under the hood. Honda is recalling 573,147 Accords in the United States equipped with V6 engines from model years 2003 through 2007, according to documents filed with the U.S. National Highway Traffic Safety Administration. In Canada, the number of affected Accords is 30,058, a company spokesman said. ...