I got the app and adapter last week and have been playing around with them. Works great on 4 different cars plus the MH, and the whole thing is less than $18. My MH does not show a fault code but shows an "incomplete" on two sensors. That is what the mechanic told me, and he said to drive it around for a week and it may clear itself. Naturally, I'm not going to drive it around town for a week but may plan a camping outing soon where I can go 1-200 miles and now I can check the sensors myself to see if it clears, then take it back for the smog test. Apparently this problem happens if a vehicle isn't used too much. Calif rules allow one sensor to show incomplete, but not two.
I'll deal with it soon, and don't start sending posts telling me to move to Montana!
