Message: this morning when i got to work, i checked my codes to see if my o2 might be sending a code. instead i got a p1687. i did a search on this and i cant find anything about it. if anyone has had this code or could tell me what it means, i would greatly appreciate it. i installed my white faced guages last nite but i dont think that would have anything to do with it.
Subject: p1687???