Hello everyone,
My front o2 sensor went out and I replaced it with a factory Denso unit. I have had the car running in closed loop for about a week without any issues but would really like to have the sensor working again as the idle is sitting at about 18 AFR. I logged the car and it showed that the target afr was 14.7 at idle and cruising and the STFT was +/- 6. The sensor doesn't seem to be adjusting the mix at all as it still idles at 18. Any ideas as to why would be appreciated.