FMI 2 — Data erratic, intermittent, or incorrect
The signal jumps around, drops in and out, or disagrees with other information the controller has.
What it typically points to
Loose or corroded connectors, chafed wiring, a failing sensor, or two redundant sensors that do not agree.
Codes with FMI 2
- SPN 27 FMI 2EGR Valve Position
- SPN 84 FMI 2Wheel-Based Vehicle Speed
- SPN 91 FMI 2Accelerator Pedal Position 1
- SPN 100 FMI 2Engine Oil Pressure
- SPN 102 FMI 2Intake Manifold #1 Pressure (Boost)
- SPN 105 FMI 2Intake Manifold #1 Temperature
- SPN 108 FMI 2Barometric Pressure
- SPN 110 FMI 2Engine Coolant Temperature
- SPN 157 FMI 2Injector Metering Rail 1 Pressure (Fuel Rail)
- SPN 168 FMI 2Battery Potential / Power Input 1
- SPN 171 FMI 2Ambient Air Temperature
- SPN 175 FMI 2Engine Oil Temperature 1
- SPN 190 FMI 2Engine Speed
- SPN 412 FMI 2EGR Temperature
- SPN 520 FMI 2Actual Retarder – Percent Torque
- SPN 627 FMI 2Power Supply
- SPN 629 FMI 2Controller #1
- SPN 636 FMI 2Engine Position Sensor (Camshaft)
- SPN 637 FMI 2Engine Timing Sensor (Crankshaft)
- SPN 639 FMI 2J1939 Network #1 (Primary Data Link)
- SPN 641 FMI 2VGT Actuator
- SPN 651 FMI 2Injector Cylinder #01
- SPN 1761 FMI 2Aftertreatment 1 DEF Tank Volume
- SPN 3216 FMI 2Aftertreatment 1 Intake NOx
- SPN 3226 FMI 2Aftertreatment 1 Outlet NOx
- SPN 3242 FMI 2Aftertreatment 1 DPF Intake Gas Temperature
- SPN 3251 FMI 2Aftertreatment 1 DPF Differential Pressure
- SPN 3364 FMI 2Aftertreatment 1 DEF Quality