SPN 102 FMI 18 fault code happens when intake manifold 1 pressure is too low. This can cause incomplete engine combustion.
Causes:
- Air intake leaks
- Damaged sensor
- Restriction in air filter or exhaust
- Fuel filter issues
- EGR plugged ports
- Failed turbo
SPN 102 FMI 18 Fault Code [Engine Issues] Explained
