Hey everyone, first post here so bare with me as I don't know if this was the right place to post this. So I have a 2012 Challenger R/T Classic, loved the car as soon as I saw it and have been generally happy with the purchase. I've owned it for about a year now. Shortly after getting the car there was a CEL and the car always came close to overheating, ended up being the lifters. The dealership fixed that right up but after that came another CEL, this time for the O2 Sensor Bank 1 Sensor 1. I finally got around to replacing the O2 Sensor during my winter break, problem seemed solved for a week or two... until it wasn't. CEL came back on, same code, same bank, same sensor same everything. It can't actually be the O2 Sensor again as the part is brand freakin' new. It's so frustrating to see that light on every time I start the car, plus I can't properly use the remote start as the car won't stay on for more than 15 seconds that way with a CEL. I haven't taken it to the dealership yet because I've got a strong feeling they'll replace the O2 Sensors again even if I tell them that I've already done so, and then probably charge me for it. I figured before I go that far that I'd ask around here to see if anyone has experienced the same problem and has a solution. Thanks!