racerX
03-13-2009, 02:36 PM
Ok so since I got tuned about a month and a half ago I have been popping P0140(no activity o2 sensor) every couple of days. I have searched the forums, but can't find much of anything about how to fix it. What I have been doing is just clearing the code with my OBD II reader, but I would really like to fix the problem. I do have a Ultimate Racing mini-muffler testpipe(they claim no CEL's). Could this of been caused by the tune or is it the testpipe or is the O2 sensor just bad? Is there a way for me to find this out before I contact UR about the pipe? Any help would be great....