The EVAP monitor might take some time to run and set. Insure your gas tank is always (and only) 1/4 to 3/4 full until the monitor runs. It could take up to 300-400 miles, and 1 to 2 weeks of driving until it shows ready. We recommend driving in a variety traffic conditions; freeway, city, stop-and-go. Avoid sharp turns and hills.
posted by SmogTips Support 01-02-2012 09:27 AM