2014 F350. When I bought the truck the dealer deleted the DPF and installed a tune that deleted the DPF and EGR. Some connectors for the DPF were cut and some were packed with dielectric grease. The nox modules appear to have been removed. After two years I started having the codes in the title. My glow plug module eventually went bad. I replaced the module. I cleaned the connector and it looked fine I filled the connector with dielectric grease. I ordered a plug for the pcm position where the emissions harness goes in. The complete emissions harness is not even plugged in and I have a latex glove over the harness end to protect it. I have now driven 6 months with no codes as I thought I had eliminated the harness from causing a problem. Yesterday it rained and the codes in the title are back. How can this be? What can I do to fix this once and for all? I’m confused.