Medium and Heavy Trucks
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Hi my name is Dan. 110 will derate and shut down your engine.... Either an overheat problem or faulty sensor or harness for the sensor.
151 Engine Protection
Coolant Temperature Too High
641 is for the VGT actuator. Possible wiring or faulty actuator or out of calibration
The actuator needs recalibration on installation with Cummins Insite.
Was it calibrated with Insite? it should not fail that soon . Not common but parts defects are possible. Id try recalibration again and see if it resolves.
Thanks for the update. It does need to be calibrated any time it is remove or replaced.