FMI 1 — Value too low (most severe)
The reading is valid but far below the normal operating range, at the most serious 'too low' level.
What it typically points to
A real under-condition such as very low oil pressure or low fuel pressure, or a sensor that has drifted low.
Codes with FMI 1
- SPN 94 FMI 1Fuel Delivery Pressure
- SPN 100 FMI 1Engine Oil Pressure
- SPN 102 FMI 1Intake Manifold #1 Pressure (Boost)
- SPN 111 FMI 1Coolant Level
- SPN 157 FMI 1Injector Metering Rail 1 Pressure (Fuel Rail)
- SPN 168 FMI 1Battery Potential / Power Input 1
- SPN 627 FMI 1Power Supply
- SPN 1761 FMI 1Aftertreatment 1 DEF Tank Volume
- SPN 3364 FMI 1Aftertreatment 1 DEF Quality
- SPN 4364 FMI 1Aftertreatment 1 SCR Conversion Efficiency