International (Navistar)
J1939 SPN/FMI
SPN 3216 / FMI 10
International Fault Code SPN 3216 FMI 10: Engine Exhaust 1 NOx 1: Abnormal Rate Of Change
SPN 3216 FMI 10 on International / Navistar trucks means: Engine Exhaust 1 NOx 1: Abnormal Rate Of Change. The failure mode (FMI 10) is “abnormal rate of change”.
Code details
- Manufacturer
- International (Navistar)
- Applies to
- International A26 (2024–2025)
- Fault code
- SPN 3216 FMI 10
- J1939 SPN
- 3216
- FMI
- 10 — Abnormal rate of change
- 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 10 tells the shop the type of failure to test for: abnormal rate of change.
- 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 3216 FMI 13 — Engine Exhaust 1 NOx 1: Out Of Calibration
- International Fault Code SPN 3216 FMI 16 — Engine Exhaust 1 NOx 1: Data Valid But Above Normal Operating Range – Moderately Severe Level
- International Fault Code SPN 3216 FMI 18 — Engine Exhaust 1 NOx 1: Data Valid But Below Normal Operating Range – Moderately Severe Level
- International Fault Code SPN 3216 FMI 20 — Engine Exhaust 1 NOx 1 : Data Drifted High
- International Fault Code SPN 3216 FMI 21 — Engine Exhaust 1 NOx 1 : Data Drifted Low
- International Fault Code SPN 3216 FMI 4 — Aftertreatment 1 SCR Intake NOx 1: Voltage Below Normal, or Shorted to Low Source
- International Fault Code SPN 3216 FMI 9 — Engine Exhaust 1 NOx 1: Abnormal Update Rate
- PACCAR Fault Code P170C — NOx Sensor Before Catalyst – Data Erratic, Intermittent or Incorrect, During Overrun
Source: International A26 2024–2025 fault code list (Diesel Laptops). See also OBD-II codes.