Hey, I just looked in my service manual for a 94 Prelude, and besides changing out the sensor, it gave no help. I'd try checking really close for a vacuum leak. It took me 3 months to find one, kept throwing a code 43 (fuel supply system), but the vacuum line going into the map sensor had a small crack in it. If your car smokes a little white smoke and idles a little shaky, that could be it.