Volvo All Engines (2010 Emissions) Fault Code: SPN 3480 FMI 15 PID: PPID 437 Aftertreatment DPF Fuel Pressure – Least Severe Level

During DPF regeneration the Aftertreatment Fuel Pressure Sensor monitors the fuel pressure rise and drop in the Aftertreament Hydrocarbon Dosing Module. During Air Purge the Aftertreatment Fuel Pressure Sensor monitors the air pressure rise and drop in the Aftertreament Hydrocarbon Dosing Module. The Engine Control Module (ECM) uses this input to determine if the system is operating correctly.

Conditions for diagnostic trouble code (DTC):
1) The voltage at pin A14.EA:50 is more than 4.68?V

Observable symptoms
1) Regeneration not possible

Probable cause
1) Short circuit to higher voltage
2) Engine wiring harness
3) Aftertreatment Fuel Pressure Sensor