What does the SPNFMI fault code mean?

[ElenaLynn]

SPNFMI fault code indicates excessive moisture in the vehicle's fuel filter. The solution is to drain the water from the fuel-water separator or replace the separator if necessary, while also checking for any sensor damage. When this issue occurs, the vehicle should not continue to be driven. Here's an introduction to fuel filters: Fuel filters can be categorized into three types - gasoline filters, diesel filters, and natural gas filters. The function of a fuel filter is to prevent particles, water, and impurities in the fuel from causing wear or other damage to the precision components of the fuel system.