Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 3482
FMI: 7
Description: AFT Fuel Shutoff Valve not responding as expected
Troubleshooting:
The Aftertreatment Fuel Shutoff Valve (AFTFSV) controls fuel supply to the Aftertreatment Fuel
Doser (AFTFD) when a regeneration is required.
Probable causes:
1) Biased AFT Fuel Pressure 1 sensor or circuit
2) AFT Fuel Shutoff Valve failure
Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 3509
FMI: 3
Description: VREF 1 voltage above maximum
Troubleshooting:
The Reference Voltage (VREF) circuit is a 5-volt reference point supplied to the Electronic
Control Module (ECM). It also provides power to all 3-wire sensors.
Probable causes:
1) VREF circuit short to PWR
Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 3509
FMI: 4
Description: VREF 1 voltage below minimum
Troubleshooting:
The Reference Voltage (VREF) circuit is a 5-volt reference point supplied to the Electronic
Control Module (ECM). It also provides power to all 3-wire sensors.
Probable causes:
1) VREF circuit short to GND
2) Failed sensor causing short to GND on VREF circuit
Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 3510
FMI: 3
Description: VREF 2 voltage above maximum
Troubleshooting:
The Reference Voltage (VREF) circuit is a 5-volt reference point supplied to the Electronic
Control Module (ECM). It also provides power to all 3-wire sensors.
Probable causes:
1) VREF circuit short to PWR
Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 3510
FMI: 4
Description: VREF 2 voltage below minimum
Troubleshooting:
The Reference Voltage (VREF) circuit is a 5-volt reference point supplied to the Electronic
Control Module (ECM). It also provides power to all 3-wire sensors.
Probable causes:
1) VREF circuit short to GND
2) Failed sensor causing short to GND on VREF circuit