The computer is looking for 2 trouble-free drive cycles. It is hard to say mileage-wise. It all depends on the speed, road condition, engine performance, among other things. In a nut shell, even though you have driven for 90 miles, but if the trips have been stop and go, you change speed all the times, transmission has to shift through gears all the times, that does not count as successful drive cycle.
What I have found to work is that if you can find an open flat highway, somewhere where you can drive for minimum 30 uninterrupted minutes, just set the cruise control at 55, drive. Do not use brake, do not downshift, do not accelerate, let the cruise control drive on its own (one speed) for a minimum of 30 minutes. Once that is accomplished, you have one successful drive cycle. Turn of the vehicle, wait a few minutes, start the vehicle, and perform another drive cycle.
Tuesday, March 19th, 2019 AT 2:39 PM