International Fault Code SPN 5394 FMI 7: Aftertreatment 1 Diesel Exhaust Fluid Doser Valve 1: Mechanical System Not Responding Or Out Of Adjustment

Code details

Manufacturer

International (Navistar)

Applies to

International A26 (2024–2025)

Fault code

SPN 5394 FMI 7

J1939 SPN

5394

FMI

7 — Mechanical system not responding or out of adjustment

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 7 tells the shop the type of failure to test for: mechanical system not responding or out of adjustment.
• 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 5394 FMI 3 — Aftertreatment 1 Diesel Exhaust Fluid Doser Valve 1 : Voltage Above Normal, Or Shorted To High Source
• International Fault Code SPN 5394 FMI 31 — Aftertreatment 1 Diesel Exhaust Fluid Doser Valve 1: Condition Exists
• International Fault Code SPN 5394 FMI 4 — Aftertreatment 1 Diesel Exhaust Fluid Doser Valve 1 : Aftertreatment 1 Diesel Exhaust Fluid Doser Valve 1 : Voltage Below Normal, Or Shorted To Low Source
• International Fault Code SPN 5394 FMI 5 — Aftertreatment 1 Diesel Exhaust Fluid Doser Valve 1: Current Below Normal or Open Circuit
• PACCAR Fault Code P3844 — DEF Dosing Valve – Current Too Low or Open Circuit on ECU (D442) Pin (16) or Pin (17)
• PACCAR Fault Code P3859 — DEF Dosing Valve – Not Responding or Out of Adjustment
• PACCAR Fault Code P3844 — DEF Dosing Valve – Current Too Low or Open Circuit on ECU (D374) Pin (A77) or Pin (A53)