It shows SOME facts. I brought an OB2 reader off Amazon and it lit up the moment I plugged it into this used car I was looking at. Buying a used car off a pri

It shows SOME facts. I brought an OB2 reader off Amazon and it lit up the moment I plugged it into this used car I was looking at. Buying a used car off a private seller is outright scary if your not a car person. At least at a car dealership I can tell how much I'm getting screwed