wbmiller32
New member
I just bought a 2013 JKU about 3 weeks ago and have put on about 800 miles so far. I bought a dynomax exhaust bolt on super turbo muffler from quadratec and put in on 2 nights ago. Everything else is stock. It was running fine the first day and then last night I started it up and it felt like the engine had a misfire and great loss of power and the CEL came on. I pulled the code and it's a (PO152 which is an 02 sensor circuit high voltage bank 2 sensor 1). I'm wondering if the dynomax had something to do with it or if there is a bigger cause. I've got a 95 YJ and have been a jeep guy my whole life but the JK is all new to me. Any help would be greatly appreciated.