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GonTruckin · 01-07-2020, **(Subject: Doser Fuel Line Pressure High DD15 )**

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?

(I'm guessing this was probably missed during the demandate process)

Thanks in advance

Waterloo · 01-07-2020, **(Subject: Doser Fuel Line Pressure High DD15 )**

Dude, you have a crap delete. More than likely the motor is cooked. You should have fixed the emission issues properly. Call Mr Hagg and see what he says, he works on Detroits too. Haggai Automotive and Diesel Repair, Griffin GA. Google is your friend. You will need to get the truck to GA, if he can help, it will be fixed properly, call him

Rawze · 01-07-2020, **(Subject: Doser Fuel Line Pressure High DD15 )**

(01-07-2020 )GonTruckin Wrote: 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?

(I'm guessing this was probably missed during the demandate process)

Thanks in advance

typical symptom of bad de-mandate programming.
get with Unilevers, Mommaburt, Mr.Hag, have the programming fixed if it is not too late already.. - bad programming always leads to a premature engine death.