2017 RAM 1500 “low oil pressure shift to park”

LOW OIL PRESSURE SHIFT TO PARK!
Running 55 mph when i got this warning, no lights just all caps message. No noise from engine at the time. Just had replacement EGR COOLER installed 180 prior to this. Fluid level was fine. They put another new original EGR Cooler in. The replacement EGR is still not available.

If you have the baby (3.0) diesel it may be a while until they get enough replacement coolers for the recall.

The first thing that needs to be done is measuring the actual oil pressure with a gauge.

Will not hold oil pressure and a clacking sound from bottom of engine. Dealer is suggesting a new engine may be needed!