Cummins Fault Code
Free · no signupSPN 110 FMI 0
Engine fan at 100% duty cycle; Significant power loss (Derate); High temp alarm; Potential engine shutdown.
System
Not specified
Symptom
Engine fan at 100% duty cycle; Significant power loss (Derate); High temp alarm; Potential engine shutdown.
Diagnosis & fix steps
Engine Coolant Temp High (Critical)
LOGIC: Overheating (Critical level).
ACTION: Check coolant level/belt tension. Inspect radiator for external blockage. Verify temp with IR gun at thermostat housing.
FIX: Clean radiator/CAC; replace Thermostat or Water Pump.
Red Seal field insights
FMI 0 usually triggers an automatic engine shutdown to prevent a cracked cylinder head.
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