Driving Pattern

Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on.
Drive at a steady speed between 15 - 75 mph (24 - 120 km/h) for at least 15 minutes, and watch the long term fuel trim. If the long term fuel trim stays at about 1.0, the vehicle is OK or it is a very minor problem. If a significant fault is still present, the long term fuel trim will move up or down while driving.

When freeze data is stored, drive the vehicle under those conditions instead of Driving Pattern 2.
If the EVAP monitor runs instead of the HO2S monitor, turn the engine off, then restart it, and the HO2S monitor will restart.
After clearing the DTC by disconnecting the battery or using the scan tool, extend Driving Pattern 2 to 40 minutes or longer to allow time for long term fuel trim to recover.
Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.