Code : Spn 3521 Fmi 31

Diesel Exhaust Fluid Quality Sensor Detects Diesel Fuel: Aftertreatment 1 Diesel Exhaust Fluid Property Condition Exists; Urea Concentration Defect

Spn 3521 Fmi 31 problem code is about Diesel Exhaust Fluid Quality Sensor Detects Diesel Fuel: Aftertreatment 1 Diesel Exhaust Fluid Property Condition Exists; Urea Concentration Defect. If you don't take the time to look into Spn 3521 Fmi 31 engine problem when it arises, it can add up quickly. One small issue like Spn 3521 Fmi 31 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.

SPNFMI Faults and Engine error code check tool. SPN code listing with names and descriptions.

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