I took my 2016 Ram 1500 to the dealership on 18 August for the usual P2002 code. They checked it out and told me they replaced the PM sensor. My CEL came back on 28 August. Same trouble code. I have been watching this and it never seemed right. The numbers are the same before and after the dealer supposedly fixed it. A pressure differential of 320 kpa is around 47 psi. That doesn't seem right. Any ideas?