Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 5456
FMI: 2
Description: Aftertreatment Fuel Inlet Temperature (AFTFIT) signal erratic, intermittent, or
incorrect
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) Biased AFTFIT sensor
2) High resistance connection at AFTFIT sensor
3) Low resistance connection at AFTFIT sensor
4) Wrong Doser Control Unit (DCU)
Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 5456
FMI: 3
Description: AFTFT 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) AFTFIT signal circuit OPEN or short to PWR
2) Failed AFTFIS
Page
Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 5456
FMI: 4
Description: AFTFT 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) AFTFIT signal circuit short to GND
2) Failed AFTFIS