Code : Spn 1639 Fmi 12
Fan Speed Sensor, Electrical Error, Signal Disturbed Or Very Low Fan Speed
Spn 1639 Fmi 12 problem code is about Fan Speed Sensor, Electrical Error, Signal Disturbed Or Very Low Fan Speed. If you don't take the time to look into Spn 1639 Fmi 12 engine problem when it arises, it can add up quickly. One small issue like Spn 1639 Fmi 12 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.
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