[jonchino]

What does "not ready" mean?
Your vehicle's OBD system collects data while you are driving and uses it later to determine if your vehicle passes the OBD emissions test. In some cases, the computer cannot collect enough data and indicates it is "not ready" to provide test results. This can occur if repair work was performed or the battery was disconnected recently. It normally takes at least a week of combined highway and city driving for the computer to complete its systems check and be "ready" for the OBD test.