Mechanic Job in Pocatello, Idaho

My 2003 Mitsubishi Outlander is broken down in my driveway. Son bought code reader and it said Master Cilanoid Sensor (I think I will have to ask him for sure. Still saying same message. Just need to know cost to have someone come out and just TELL ME what is wrong with the damn thing. Want to know if it is a big problem or small or inbetween. 1 Is this service available in Pocatello and 2. How much to come to my driveway and diagnose the problem?