2012 Mustang GT O2 Sensor Bad. P2629 & P2197
I went to start my car up last week and it was idling really bad. I immediately turned the car off. I cranked it back up and the idle smoothed out but wasn't running perfect and I noted a strong gas smell. The CEL light came on so I pulled the codes. I got P2197 and P2629. The codes pointed to the driver side bank 2 sensor 1 oxygen sensor. I have long tubes installed with an off road X pipe.
I was running rear O2 sensor extensions and an extension on the driver side front sensor. I didn't need to use an extension on the passenger side. I decided to remove the extension and clear the code. This worked for a little while but the car was still running badly. The code soon came back on.
I ordered two brand new O2 sensors from Ford. The part number is DY-1185. Installed the sensors and problem solved.
Something I noted when comparing the bad driver side sensor with the good passenger side is the the driver sensor looks dirtier and more covered in soot. The passenger side is giving proper readings and looks alot cleaner. Go figure.
2012 Mustang GT Premium. 6MT. Homestead, FL