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Oxygen sensor heater circuit, oxygen sensor circuit, and catalyst repair verification Drive Mode

  1. Perform DRIVE MODE 1 first.
  2. Verify that the following conditions are correct if necessary:
  3. Start the engine and allow it to idle for at least 5 minutes.  Drive the vehicle above 40 mph (65 km/h) for at least 1 minute followed by at least 3 minutes between 40-60 mph (65-96 km/h).
  4. Stop the vehicle and use an OBD-II interface to check for Drive Mode completion.  If not complete, turn ignition key to OFF, then return to Step 3.
  5. Use an OBD-II interface to access DIAGNOSTIC MONITORING TEST RESULTS.  If "MEASs" are not within specification, repair has not been completed
  6. Verify no DTCs are present.


[OBD-II DRIVE MODE1 - From 2002 Mazda Millenia factory service manual]