[Capt W]

Like the others have stated, move it to the downstream sensor. I've had this setup on my 2005 for a few years, and my light has never returned and I've had no problems with the OBDII tests in Illinois (no visual inspections, but highly doubt most of those clowns would know an O2 sensor from a motion sensor).

I use two spacers and steel wool packing. The first spacer (on the sensor itself) is drilled out to 1/2-inch to accommodate the sensor tip; I mashed a few ounces of steel wool inside the second spacer (with small hole) and screwed that to the first spacer before installing downstream.

I don't feel the least bid bad about this "hack," as the code is thrown when the converter falls below a pre-programmed level of efficiency. While I guess we'll never know what that level actually is, there are some automotive writers who believe the threshold could be 80-85% efficient. That's like buying a Big Gulp, taking a few drinks, and having someone tell you that you have to purchase a new Big Gulp because yours is too empty. But wait...don't I still have over 3/4 of my frosty-cold beverage left? The planned obsolescence has to make you wonder...

 

[Capt W]

Do The spacers not harm or damage any part of engine? Somehow it fools system to show everything is ok. Just curiosity

All you're doing is removing the downstream sensor's tip from direct exhaust flow, providing a "cleaner" reading.