Continuing yesterday's weakness, the 30-share index fell by 65.35 points, or 0.23 per cent, to 28,494.27, with auto, consumer durables, IT, banking, realty and PSU sector stocks leading the fall.
The gauge had retreated from record-closing by losing 134.37 points in the previous session.
Also, the National Stock Exchange index Nifty shed 18.90 points, or 0.22 per cent, to 8,537.00 in early trade.
Brokers said besides a mixed trend on other Asian bourses after Moody's downgraded Japan's sovereign debt rating, selling by cautious funds and retail investors ahead of RBI's policy review, influenced sentiments.
The US Dow Jones Industrial Average ended 0.29 per cent lower in yesterday's trade.
