DELTA P SENSOR CM871

[RTRUCKING48]

I was doing the Egr tune up on my 09 prostar with cm871 but I notice on the delta p sensor there was moisture on both inlet and outlet holes and that sensor it's 5 months old I check the rest of the components and I couldn't find moisture no where else and I'm not missing coolant and it didn't smell like coolant either it was plain water so I'm not sure if its normal or when the truck gets washed moisture gets to it? Truck was washed a couple days ago