pro carbon ktm. 4 Solenoid,. . Thread Tools. . Good evening. . . SPN 1323 FMI 31 Description This Fault Code Sets when the Motor Control Module (MCM) Detects That Cylinder 1 Has Low rpm Speed with the Injector. . . If you have noticed the code SPN 1328 FMI 31 on your vehicle, it means that your vehicle has misfired. 18 Engine Fuel Pressure (Extended Range) 19 Engine Oil Pressure (Extended Range) 20. Spn 94 Fmi 11 Engine Code - ox-on. Where from x. SPN 1328FMI 31. . ">.