Simple, easy to use OBD II scanner for just over $80..
http://www.jcwhitney.com/webapp/wcs/stores/servlet/Product?storeId=10101&Pr=p_Product.CATENTRY_ID%3A2011215&TID=8014524F&productId=2011215&catalogId=10101
http://www.jcwhitney.com/webapp/wcs/stores/servlet/Product?storeId=10101&Pr=p_Product.CATENTRY_ID%3A2011215&TID=8014524F&productId=2011215&catalogId=10101