Do you mean P.O.S.T. Diagnostic Code reader card? If yes, then Rashi Peripherals have one such product.
You can take a look at it in www.rptechindia.com/rashib2c/productdisplayrp00.asp%3Fproductid%3DDOCTOR1.1%26maincatgrp%3D%26maincategory%3DSystem%2BDiagnosis%26subcategory%3DDiagnosis%2BCard+PC+Diagnostic+Card%2Brashi+peripherals&hl=en]this cachecd page[/url] ( currently, that web page does not exist )