Depends onb which monitor has not run. The EV (evap controls) is the most difficult, and usually requires a cold start, normal warmup, at lesat a quater tank os gas, driven at constant speed to several minutes several times, etc.
Other requires driving at least 55 mph for a few minutes, etc., but does depend upon the factory specs for the specific model. Every time you reset (clear) a malfunction code with a scanner, the monitors will have to rerun. You may have six or so sepaerate monitos on your car.
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