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Regen Frequent — Possible Fault Codes
Found 6 fault codes associated with regen frequent. Codes are sorted by severity — check STOP ENGINE codes first.
SPN 3050 FMI 9
DPF Regeneration Too Frequent
International A26 • Component: Diesel Particulate Filter (DPF) / Engine • J1939
SPN 3226 FMI 9
DOC Inlet Temperature Sensor
Detroit Diesel DD13 • Component: Diesel Oxidation Catalyst (DOC) Inlet Temp Sensor • J1939
SPN 3361 FMI 7
DPF Differential Pressure Fault
International A26 • Component: DPF Differential Pressure Sensor / DPF Assembly • J1939
SPN 3031 FMI 16
Exhaust Gas Temperature High
International A26 • Component: Aftertreatment Exhaust Gas Temperature (EGT) Sensor • J1939
SPN 3361 FMI 7
DPF Differential Pressure Fault
Detroit Diesel DD13 • Component: DPF Differential Pressure Sensor / DPF Assembly • J1939
SPN 4251 FMI 0
DOC Outlet Temperature High
Detroit Diesel DD13 • Component: DOC Outlet Temperature Sensor / Aftertreatment • J1939
⚠️ Diagnostic Note:
Symptoms can have multiple root causes. Always verify with a diagnostic scan tool before replacing parts. The fault codes listed above are possible matches for regen frequent based on SAE J1939/J1587 fault code definitions and OEM service documentation.