i have 5 scans all using my mpvi pro, 2 are of the car off(was just trying to check ses lights), and 3 are driving around, but all 5 scans show nothing, not one bit of anything, ive got 12 minutes of nothing along with another scan of 6 minutes of nothing, am i doing something wrong? i have it configured to default imperial, was just tryin to use it for the first time.