2015 Ram 2500 with 6.7 and 68rfe. 79,000 miles
The service def system light came on.
codes P208d Reductant Pump Control Circuit High.
P20E9 Reductant Pressure Too High
I cleaned the def injector nozzle, which wasn’t too dirty.
ohms was 13.3.
Cleared code, drove about 30 miles...