I am trying to locate the reason for the P06DD code my 2012 Caravan 3.6L is showing. I have good oil pressure at the oil filter. I am wondering if this is most likely a problem with the oil pressure sending unit on the upgraded oil cooler I installed several months ago. My understanding is, some of those building these oil coolers are using cheap pressure sensors and I should have just changed to my OEM sensor when I installed the oil cooler. I can use a bit of advice on the easiest way to change the oil pressure sensor / sender without removing the upper and lower intake plenums and without insulting my choice of coolers please. I bought the best one I could afford at the time. Thanks in advance :-)