Has anyone had to change their Air Fuel Ratio Sensor P1163? I had my "check engine" light come on and stay on for approx 400 miles before turning off by itself. They hooked it to the machine and it said that this sensor had malfunctioned but now was working. They said it may have been some sort of hickup and to not change the sensor unless the problem reoccurred. I'm a little concerned mostly because I worry that my car may not be getting the best mileage if it isn't working correctly. Also I wonder if this so called hickup had anything to do with the recall on the emissions computer settings.