Code : Spn 639 Fmi 19
Can Bus Messages Are Not Being Transmitted Or Received Correctly Possible Effects Are None, Slow Response, Or Machine Down
Can Bus Off - There Are More Than 256 Can Bus Errors (type B Only)
Loss Of All Can Messages
Spn 639 Fmi 19 problem code is about Loss Of All Can Messages. If you don't take the time to look into Spn 639 Fmi 19 engine problem when it arises, it can add up quickly. One small issue like Spn 639 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.