that is a good reading, but sometimes it checks to be good when it is not. i read the code also, and it says replace sensor probe. but, the sensor probe plugs into the erc board, and that is where the problem could be. so my friend it is a toss up. you could replace the sensor, and see if it works. if not, the board will be the issue. that is the best way to approach it. when a erc board is bad, i usually sell the sensor also. its just a good way to go, because, sometimes a bad board could damage a sensor. tom