I replaced my 02 sensor and erased the code with my scan tool. Took it out for a drive on the highway doing 100 km/s and then 80km/s after that did some city driving got home after to 40 mins. I checked to see if it was ready for emissions.On my scan tool showed yellow light with flashing EV on the screen. What did I do wrong here? I live in London Ontario Canada there etesting has changed they plug into computer for to see if I pass they don't hook up to the tailpipe now.