While I had some time today, I decided to finally look into my EGR and O2 sensor codes. I put the old EGR valve back on, and found that when I installed the new one I didn't put a gasket on. Not sure if it was a gasket issue, or if the new EGR valve was bad. I only replaced it because it came with the truck.
For the O2 sensor, I had attempted to replace it before, couldn't get the old one off. I sprayed it a few times with PB blaster, and then never attempted it again. Today it came off without any real issue. Seems to have taken care of the problem.
For the O2 sensor, I had attempted to replace it before, couldn't get the old one off. I sprayed it a few times with PB blaster, and then never attempted it again. Today it came off without any real issue. Seems to have taken care of the problem.