ajlabish Posted March 8, 2016 Share Posted March 8, 2016 hey guys i have a 01 L sedan that i got a new exhaust on but since it's catless i keep getting a P0420 pending code and i was wondering what i could do to remove the code from my ECU short of swapping my stock exhaust back on for emissions. I'm up here near Seattle, WA for those with tuning shop tips. I don't want to put my old exhaust on for a few reasons. one, exhuast sounds amazing now, and 2 it's a pain getting the car up to do a full exhaust swap again every two years. plus i don't want to lug that crap around if i have to move Link to comment Share on other sites More sharing options...
JBisson Posted March 8, 2016 Share Posted March 8, 2016 You could try an o2 simulator Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Matty2Hotty Posted March 8, 2016 Share Posted March 8, 2016 Yup I have one for sale with a rear o2 pigtail laying around to be plug and play. Link to comment Share on other sites More sharing options...
ajlabish Posted March 10, 2016 Author Share Posted March 10, 2016 An o2 simulator? Forgive my ignorance but I don't know what that is. I know my exhaust has both o2 sensors hooked up and fully functional Link to comment Share on other sites More sharing options...
JBisson Posted March 10, 2016 Share Posted March 10, 2016 It basically provides a constant signal to the computer that is within the allowed parameters to keep the computer happy Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
ajlabish Posted March 15, 2016 Author Share Posted March 15, 2016 ok would you perchance have a link to the part you've mentioned. will it take care of the pending code as well? like I've mentioned it doesn't pop a proper CEL just a pending code Link to comment Share on other sites More sharing options...
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