Monitors, Trips, Drive Cycles and Readiness Codes

INSPECTION/MAINTENANCE (I/M) READY STATUS
I/M ready status means a flag for each emission test has been set in the PCM. I/M ready status indicates that the vehicle on-board emissions diagnostics have been run. The status flag does not display passed or failed, only that the on-board diagnostic test was completed. The I/M ready status is used for tests that are only run once per trip.