International Fault Code SPN 5246 FMI 16: Aftertreatment SCR Operator Inducement Severity: Data Valid But Above Normal Operating Range – Moderately Severe Level

Code details

Manufacturer

International (Navistar)

Applies to

International A26 (2024–2025)

Fault code

SPN 5246 FMI 16

J1939 SPN

5246

FMI

16 — Data valid but above normal range (moderately severe)

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 16 tells the shop the type of failure to test for: data valid but above normal range (moderately severe).
• 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 5246 FMI 0 — Aftertreatment SCR Operator Inducement Severity: Data Valid But Above Normal Operational Range – Most Severe Level
• International Fault Code SPN 5246 FMI 15 — Aftertreatment SCR Operator Inducement Severity: Data Valid But Above Normal Operating Range – Least Severe Level
• PACCAR Fault Code P1516 — Aftertreatment System – Malfunction Detected