Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 3479
FMI: 6

Description: AFT fuel doser valve high side short circuit
Troubleshooting:
The Aftertreatment Fuel Doser (AFTFD) is supplied with pressurized fuel from the fuel filter
housing. When a regeneration is required, The Doser Control Unit (DCU) sends voltage to the
AFTFD to inject fuel into the turbo exhaust pipe.
Probable causes:
1) Short to power on high side
2) Open wire to AFTFD
3) Open wire from AFTFD
4) Failed AFTFD
5) AFTFD‐H circuit short to power
6) AFTFD valve failed open

Make: International
Engine: MaxxForce DT (2010 & Newer) PID: N/A
SPN: 3480
FMI: 3

 

Description: AFTFP1 signal Out of Range HIGH
Troubleshooting:
The Aftertreatment Fuel Inlet Sensor (AFTFIS) is composed of a fuel temperature and fuel pressure
sensor. The AFTFIS monirots fuel pressure and temperature in the aftertreatment fuel system.
Probable causes:
1) AFTFP1 signal circuit OPEN or short to PWR
2) Failed Aftertreatment Fuel Inlet Sensor (AFTFIS)

Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 3480
FMI: 4

Description: AFTFP1 signal Out of Range LOW
Troubleshooting:
The Aftertreatment Fuel Inlet Sensor (AFTFIS) is composed of a fuel temperature and fuel
pressure sensor. The AFTFIS monirots fuel pressure and temperature in the aftertreatment fuel
system.
Probable causes:
1) AFTFP1 signal circuit short to GND
2) Failed AFTFIS

Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 3482
FMI: 3

Description: AFT Fuel Shutoff Valve short to PWR
Troubleshooting:
The Aftertreatment Fuel Shutoff Valve (AFTFSV) controls fuel supply to the Aftertreatment Fuel
Doser (AFTFD) when a regeneration is required.
Probable causes:
1) AFTFSV circuit OPEN or short to PWR
2) Failed AFTFSV

Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 3482
FMI: 4

Description: AFT Fuel Shutoff Valve short to GND
Troubleshooting:
The Aftertreatment Fuel Shutoff Valve (AFTFSV) controls fuel supply to the Aftertreatment Fuel
Doser (AFTFD) when a regeneration is required.
Probable causes:
1) AFTFSV circuit short to GND
2) Failed AFTFSV