Volvo

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

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

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 sensor signal is not rational
2) Aftertreatment fuel pressure below Placeholder, aftertreatment fuel shutoff valve open

Observable symptoms
1) Regeneration not possible
2) Regeneration aborted

Probable cause
1) Air in the fuel system
2) Aftertreatment fuel shut-off valve, Stuck in one position
3) Fuel filter
4) De-aeration valve
5) Overflow valve
6) Fuel pump

Detailed information
1) This DTC will only set during an aftertreatment DPF service regeneration

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 sensor signal is not rational
2) Aftertreatment fuel pressure below Placeholder, aftertreatment fuel shutoff valve open

Observable symptoms
1) Regeneration not possible
2) Regeneration aborted

Probable cause
1) Air in the fuel system
2) Aftertreatment fuel shut-off valve, Stuck in one position
3) Fuel filter
4) De-aeration valve
5) Overflow valve
6) Fuel pump

Detailed information
1) This DTC will only set during an aftertreatment DPF service regeneration

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 less than 0.2?V

Diagnostic operating conditions
1) Ignition key in ON position

Observable symptoms
1) Regeneration not possible

Probable cause
1) Connector
2) Open circuit, Supply wire
3) Open circuit, Signal wire
4) Short circuit to ground, Signal wire
5) Aftertreatment Fuel Pressure Sensor
6) Engine control module (ECM)

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 less than 0.2?V

Diagnostic operating conditions
1) Ignition key in ON position

Observable symptoms
1) Regeneration not possible

Probable cause
1) Connector
2) Open circuit, Supply wire
3) Open circuit, Signal wire
4) Short circuit to ground, Signal wire
5) Aftertreatment Fuel Pressure Sensor
6) Engine control module (ECM)