International Fault Code SPN 190 FMI 4: Engine Speed : Voltage Below Normal, Or Shorted To Low Source

Code details

Manufacturer

International (Navistar)

Applies to

International A26 (2024–2025)

Fault code

SPN 190 FMI 4

J1939 SPN

190

FMI

4 — Voltage below normal, or shorted to low source

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 4 tells the shop the type of failure to test for: voltage below normal, or shorted to low source.
• 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 190 FMI 0 — Engine Overspeed – Most Severe Level
• International Fault Code SPN 190 FMI 3 — Engine Speed : Voltage Above Normal, Or Shorted To High Source
• Cummins Fault Code 115 — Engine Speed/Position Sensor Circuit - lost both of two signals from the magnetic pickup sensor
• Cummins Fault Code 121 — Engine Speed/Position Sensor Circuit - lost one of two signals from the magnetic pickup sensor
• Cummins Fault Code 234 — Engine Speed High – Critical
• PACCAR Fault Code P0017 — Crankshaft Speed Signal – Not Corresponding With Engine Position
• PACCAR Fault Code P0219 — Engine Speed – Data Valid But Too High
• PACCAR Fault Code P0335 — Crankshaft Speed Signal – Disturbed or No Signal During Engine Operation