pardon me, i know this has been posted so many times ..tried searched, but more i read, more confused i am getting :) try all the procedures .. COMMAND: ATZ RESPONSE: ? > COMMAND: ATI RESPONSE: ? > COMMAND: ATE0 RESPONSE: ELM327 v1.5 > COMMAND: ATL0 RESPONSE: ATL0 OK > COMMAND: ATH0 RESPONSE: ATH0 O...