I got a check engine light .... code is O2 sensor Bank 1 High voltage.

I still get 30 MPG

I read that many aftermarkets O2 sensors doesn't really help, not permanetly atleast (doesn't last).

Since, I'm still getting good MPG, I thought it would be a good idea to get one of those o2 simulators for $15????

http://cgi.ebay.com/ebaymotors/MIL-E...11839660QQrdZ1
or
http://cgi.ebay.com/ebaymotors/o2-Ox...06183216QQrdZ1