Code : Spn 904 Fmi 19
J1939 Front Axle Speed Signal Is Erratic
J1939 Front Axle Speed Signal Is Erratic = Undefined Value But Not Sna
Spn 904 Fmi 19 problem code is about J1939 Front Axle Speed Signal Is Erratic = Undefined Value But Not Sna. If you don't take the time to look into Spn 904 Fmi 19 engine problem when it arises, it can add up quickly. One small issue like Spn 904 Fmi 19 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.