7afe CEL code w/out 2nd o2 sensor, CEl code 2 weeks after installing a header without the 2nd o2 sensor. |
7afe CEL code w/out 2nd o2 sensor, CEl code 2 weeks after installing a header without the 2nd o2 sensor. |
Apr 4, 2010 - 10:14 AM |
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Enthusiast Joined Apr 4, '10 From Asheville, NC Currently Offline Reputation: 0 (0%) |
I apologize if this has been asked before. The search function is practically worthless since I can't search the term "o2" and every search I tried brought about 25 pages of results (none of which helped me).
I installed my aftermarket header about 2 weeks ago. Since there is no place for the 2nd o2 sensor, I simply unplugged it. Just this morning, it threw a CEL code (code 21: oxygen sensor). I want to know if any performance is going to be lost from not having the 2nd o2 sensor plugged in. From what I understand its job is to simply make sure the cat is functioning. Also, if it matters, my '95 7afe has an intake and is also straight-piped. - Tum This post has been edited by Tuminatuh: Apr 9, 2010 - 7:55 PM -------------------- |
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