Yes, that is apparently what fixed the problem. We had replaced the sensor with no luck and then on Rob at Needswings suggestion changed out the oposite side sensor we knew was good and the code was still there. After scratching our heads for several weeks, tracing the sensor wires and other fun stuff, the exhaust leak became so loud with the hood open it sounded like open cut outs. Took the car to the muffler shop and they found and fixed the problem. The next day when I started the car for the first time the CEL was gone. It has been a month and it has not returned. good luck.