Code : Spn 3520 Fmi 18
Nox Emission Reductant - Reductant Quality
Spn 3520 Fmi 18 problem code is about Nox Emission Reductant - Reductant Quality. If you don't take the time to look into Spn 3520 Fmi 18 engine problem when it arises, it can add up quickly. One small issue like Spn 3520 Fmi 18 can cause a larger component to become damaged without taking the time to investigate. If you suspect your truck is suffering from one of these issues, look into replacing those small components to save money down the road.
Note: This description represents text descriptions for faults supported by another coding system and does not necessarily comply with SAE J1939. For a specific engine manufacturer's explanation for codes, please consult the engine's technical manual.