International (Navistar)
J1939 SPN/FMI
SPN 931 / FMI 11
International Fault Code SPN 931 FMI 11: EFP Operation Fault
SPN 931 FMI 11 on International / Navistar trucks means: EFP Operation Fault. The failure mode (FMI 11) is “root cause not known”.
Code details
- Manufacturer
- International (Navistar)
- Applies to
- International MaxxForce DT (2010–2019)
- Fault code
- SPN 931 FMI 11
- J1939 SPN
- 931
- FMI
- 11 — Root cause not known
- Truck models in source
- 3200, 4100, 4300, 4400, 7300, 7400, 7500, 7600, 7700, 8500, 8600, BE 200, CE Bus, CXT, DuraStar, LoneStar, MXT, ProStar, RXT, TranStar, WorkStar
What to do next
- Read active and inactive codes with the OEM service tool (Diamond Logic Builder can clear previously active codes) and note the occurrence count.
- FMI 11 tells the shop the type of failure to test for: root cause not known.
- Have a heavy-duty diesel technician confirm the fault against the engine or chassis service manual before replacing parts.
Get this code diagnosed
Send one request and nearby diesel shops and mobile mechanics can quote the repair.
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Related fault codes
- International Fault Code SPN 931 FMI 19 — EFP Not Detected on J1939
- International Fault Code SPN 931 FMI 3 — EFP Short to PWR
- International Fault Code SPN 931 FMI 4 — EFP Open Load / Circuit or Short to GND
- Cummins Fault Code 316 — Fuel Supply Pump Actuator Circuit - shorted high
- Cummins Fault Code 318 — Fuel Supply Pump Actuator – mechanically stuck
Source: International MaxxForce DT 2010–2019 fault code list (Diesel Laptops). See also OBD-II codes.