Use freely ELM327 the first Windows application of this type! With this App use your ELM327 as you wish What is ELM327? It is a diagnostic interface that allows to communicate with vehicle responding to OBDII Protocol. Thank to this application and ELM237 data sheet ( You can find it here: http://elmelectronics.com/DSheets/ELM327DS.pdf) you will be able be able to read a lot of information about you car such as read defaults. Do not use this application while driving. CeriBoo will not be responsible in case of car damages. This app is like diagnose your app. but with this app feel free to communicate with your car and your ELM327 tool as you wish! No translation of the data sent by the tool.