Cummins Fault Code
Free · no signupSPN 3242 FMI 15
Regen Aborted / High EGT Warning
System
Emissions / DPF
Symptom
Regen Aborted / High EGT Warning
Diagnosis & fix steps
LOGIC: DPF Intake Gas Temperature High - Least Severe Level.
ACTION: Inspect DPF intake temperature sensor wiring for insulation burn damage. Check for unburned engine oil or raw fuel dumping into exhaust from turbo seal leakage or leaking fuel injector.
Red Seal field insights
Thermal Threshold: DPF inlet temperature exceeded ~650°C during active regeneration, prompting the ECM to cut dosing fuel injection to prevent substrate melt-down.
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