Today was sensor day. The code that popped up was for the particulate sensor. It took a week, but it arrived yesterday.
So I crawled under the after jacking up one corner and setting it on a jack stand. I followed the wires from the inline box mounted to the outside passenger frame rail to the particulate filter, cut the wires, and pulled the sensor with a socket. Only I noticed the socket size was one size down from the new part. the sensor also looked different than the new part. Upon closer inspection, the box at the end of the wires was different and so was the electrical connector. A quick search on the part number on the box told me I removed the NOx sensor instead. That was a $200+ mistake but a new one will be here overnight.
Then I re grouped and searched for the correct sensor and found it in the tailpipe with the box mounted to the inside passenger frame rail. Verified the wiring, plugs and box all matched 100% before cutting the wires. This one wasn't turning so I soaked it in PB Blaster and did something else for a bit. Then I heated the pipe around the sensor with my small torch, then quenched everything with more PB Blaster. The nut turned free immediately and was backed out.
Now, the sensor body was still stuck. So repeat PB Blaster, heat, quench and then work the sensor with pliars, not a good enough grip. Switch to vise grips, it breaks lose and comes out cleanly.
Then, installed the new part without any issues.
