I tried that, turned it on with sensor disconnected, then with sensor in free air outside the car. It did not seem to recalibrate. Sensor didn't look that dirty, either. Gonna dig out the manual, and drop the column to double check power supply under my dash. Car was a little rich at around 12, but wouldn't think that would kill a sensor that quick.Was just hoping someone else had it happen and fixed it to help point me in the right direction quicker. Thanks!