2003 acura rsx 68 k engine light on

i got the same computer reading on my 2002 rsx-my emissions reading was just fine. i have done nothing about replacing and/or repairing the oxygen sensor for the past year and no surging or anything. i also wondered if using ethanol gas had anything to do with messing up the sensor as it was too much of a coincidence that after using two tankfuls of ethanol gas, the engine light came on

something called that catalytic converter located underneath your car, there are wires that lead into it thats ur 02 sensor, for me there a pain to get out.

If you have an Autozone nearby, they will read the problem code from cars computer for free. I've got 2002 RSX base with 71 K and the problem code I have is the oxygen sensor. I looked around and found one for just under $200 http://www.rockauto.com/, and I plan to install it myself. All needed is a sensor wrench that I think I can either buy for under $10 or borrow it from one of the auto parts stores that lend tools.