There are several tests for code #3 .. I can email you the section if you want to test it .. About 90% of the time code #3 is a bad angle sensor ..
What year is your Recon .. There is a product up-date on 2002-04 TRX250TE angle sensors made in Mexico .. If you bought the bike new you should have received a letter from Honda if your bike was in the serial number range .. If you bought it used you may have to phone your dealer to check if your bike is in the serial number range ..