Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 656
FMI: 7

Description: Injector 6 Spool Motion Compensation Max Authority Reached
Troubleshooting:
The Electronic Control Module (ECM) determines when fuel needs to be supplied to injectors
and supplies voltage to the injectors. The voltage causes a needle inside the injector to lift
which uncovers the spray holes, directing fuel into the cylinder.
Probable causes:
1) Individual injector spool motion compensation exceeding maximum threshold
2) Mismatched Engine Control Module (ECM) programming

Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 656
FMI: 14

Description: Injector 6 Fuel quantity/timing error
Troubleshooting:
The Electronic Control Module (ECM) determines when fuel needs to be supplied to injectors
and supplies voltage to the injectors. The voltage causes a needle inside the injector to lift
which uncovers the spray holes, directing fuel into the cylinder.
Probable causes:
1) Injector fuel or timing deviation
2) Spool to control valve body static leakage
3) Puck leakage
4) Backup ring and / or O-ring leakage at injector inlet
5) Injector damage
6) Biased Injection Control Pressure (ICP) sensor
7) Injector variability
8) Engine oil worn out
9) Compression loss
10) Bent connecting rod
11) Aerated oil
12) Exhaust Gas Temperature (EGT) sensor drift (biased sensor)

Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 679
FMI: 3

Description: IPR short to PWR
Troubleshooting:
The Injection Pressure Regulator valve regulates oil pressure in the high pressure injection
control pressure system. The Electronic Control Module (ECM) uses the Injection Control
Pressure (ICP) sensor to monitor adjust the IPR valve duty cycle to match engine
requirements.
Probable causes:
1) IPR circuit short to PWR

Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 679
FMI: 4

Description: IPR open or short to GND
Troubleshooting:
The Injection Pressure Regulator valve regulates oil pressure in the high pressure injection
control pressure system. The Electronic Control Module (ECM) uses the Injection Control
Pressure (ICP) sensor to monitor adjust the IPR valve duty cycle to match engine
requirements.
Probable causes:
1) IPR circuit open or short to GND