SPN 2791 FMI 13 EGR out of calibration. 6.7 Cummins ISB.
SPN 2791 FMI 13 Count EGR out of calibration. EGR was clogged.
Cummina 6.7 Diesel Engine
cleaned EGR and Sensors
ran a forces regen.
codes cleared and truck was out of Derate
if its clean and working properly and soot level is normal, it most likely has a bad EGR or actuator.