diesel 5.0 cummins engine codes maf titan xd p9101

2017 Nissan Titan XD 5.0 diesel A week ago I had the recall done, so I'm not sure if this may have something to do with it 🤷🏼‍♀️ Code reader says that its something to do with the air flow. I had a code pop up about 8-10 months back, cleared the code, changed the air filter & she was good to...