I have replaced well over 10 of the rear heated 02 sensors and with the car being well out of warranty (95' max), I'm not willing to throw away anymore money on it. The car has never had a tank of anything less than 91 octane and most of my drives are fair distances on the highway. I'm getting code 0707 again and the light won't stay off for more than a day. The last time the sensor was replaced was 2 years ago when the cat coverter was replaced as well. If I'm correct, as long as the 2 front sensors are functioning correctly, the rear one just serves as a monitor for the cat...and is basically useless. Rather than constantly reset the engine light on a daily basis, is there a way I can disable the Rear 02 Sensor so it wont shoot trouble codes to the ECM anymore?

-Thanks
-Ben

 

They make O2 simulators, check eBay.

 

Hmm, have the other o2 sensor's been replaced yet? Maybe the rear o2 code keeps popping up because the front ones are bad, but they just never throw a code. Also, do you have an upgraded ecu?