CarMD is designed to work on all 1996 and newer vehicles driven in the U.S., with on-board diagnostic second generation (OBD2 or OBD II) technology. This includes cars, light trucks, minivans, SUVs and hybrids – foreign and domestic. A light-duty truck is any motor vehicle having a gross vehicle weight rating (curb weight plus payload) of no more than 8,500 pounds (3,855.5 kg).
If your vehicle is 1995 or earlier, CarMD will not work.
Other vehicles that will not work.
To see if your vehicle is compliant, look for a sticker (image above) that says OBD-II or OBD2 under the hood, or in the vehicle’s service manual.