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High Exhaust Temperature — Possible Fault Codes

Found 3 fault codes associated with high exhaust temperature. Codes are sorted by severity — check STOP ENGINE codes first.

⚠️ 1 STOP ENGINE-level code associated with this symptom. Do not continue driving.

SPN 102 FMI 18

Intake Manifold Pressure critically low

Cummins ISX15 • Component: Turbocharger / Charge Air System • J1939

🔴 STOP ENGINE

SPN 3031 FMI 16

Exhaust Gas Temperature High

International A26 • Component: Aftertreatment Exhaust Gas Temperature (EGT) Sensor • J1939

🟠 CHECK SOON

SPN 4251 FMI 0

DOC Outlet Temperature High

Detroit Diesel DD13 • Component: DOC Outlet Temperature Sensor / Aftertreatment • J1939

🟠 CHECK SOON

⚠️ 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 high exhaust temperature based on SAE J1939/J1587 fault code definitions and OEM service documentation.