October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

O2 Sensor Monitor

The vehicle will need to be driven for a period of time at a steady highway speed. Approximately 35 to 40 MPH for 2.5L and 4.0L engines, 50 to 60 MPH for all others and brought to a stop for a short period of time with the A/T left in Drive. The O2 Monitor will not run in Park or Neutral, except for vehicles equipped with a M/T.