Had to replace my up stream 02 sensor on bank 1 this weekend and I didn't bother to reset the ECU. My gas mileage starting going bad again just like last year around this time and last year it was bank 2 (front). When the front went bad without a code my front spark plugs got ate up apparently because of a rich condition. I guess I should have just replaced both upstream 02 sensors at the same time. The rear one is a pain in the ass to replace BTW.
So is it a must to reset the ECU after replacing an 02 sensor?
So is it a must to reset the ECU after replacing an 02 sensor?