International Fault Code SPN 1328 FMI 31: Misfire – Cylinder 6

Code details

Manufacturer

International (Navistar)

Applies to

International MaxxForce DT (2010–2019)

Fault code

SPN 1328 FMI 31

J1939 SPN

1328

FMI

31 — Condition exists

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 31 tells the shop the type of failure to test for: condition exists.
• Have a heavy-duty diesel technician confirm the fault against the engine or chassis service manual before replacing parts.

Related fault codes

• International Fault Code SPN 1328 FMI 31 — Engine Cylinder 6 Misfire Rate: Condition Exists
• Cummins Fault Code 666 — High #6 LB Cylinder Power
• PACCAR Fault Code P0306 — Cylinder 6 – Contribution Too Low or Misfire