SPN 102 FMI 18 Fault Code [Engine Issues] Explained

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