The code reader you have is the correct code reader. Make sure you have followed the operating directions correctly. Also make sure that the car isn't a between model (after XOXO 95 or something like that). There are cars that are fitted with both OBD1 and 2, some that are close to OBD2 will be like this. Some makes didnt change over until it was required by federal law. For you just make sure its after june of 96 and this will be one the door panel on a sticker