Code : Spn 609 Fmi 11
Internal Fault; Backup Control Defective
Spn 609 Fmi 11 problem code is about Internal Fault; Backup Control Defective. If you don't take the time to look into Spn 609 Fmi 11 engine problem when it arises, it can add up quickly. One small issue like Spn 609 Fmi 11 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.