The Sensex, which rallied by 219 points in the early trade is now down by 171 points at 19215 level. The 30-share barometer which zoomed over 200 points on renewed buying, mainly, in Auto, Consumer Durable, Oil and Gas, Capital Goods and Banking counters plunged in the afternoon trade. Similarly, the NSE 50-share Nifty which moved up by 59 points is now down by 57 points at 5,767 level.