[GonTruckin]

Hey guys. I have a 2012 dd15 epa10. Def has been demandated on this truck.

For a year now this same check engine light comes on about 20 minutes after start of the truck and driving.

I checked the fault and its "Doser Fuel Line Pressure High"
Number 4077
Confirmed, active  permanent 

Any idea how to remove this by going into parameters?

Thanks in advance