VOLVOUU All Engines (2013 Emissions) Fault Code: P20DD64 PID: EMS Exhaust Aftertreatment Fuel Pressure Sensor

VOLVOUU All Engines (2013 Emissions) Fault Code: P20DD64 PID: EMS Exhaust Aftertreatment Fuel Pressure Sensor

Circuit description
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)
The sensor signal is not rational

Observable symptoms
Regeneration not possible

Probable cause
1) Aftertreatment Fuel Pressure Sensor