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Engine Derate — Possible Fault Codes
Found 23 fault codes associated with engine derate. Codes are sorted by severity — check STOP ENGINE codes first.
⚠️ 9 STOP ENGINE-level codes associated with this symptom. Do not continue driving.
SPN 1569 FMI 31
Engine Protection Torque Derate
Cummins ISX15 • Component: Engine Control Module (ECM) • J1939
SPN 102 FMI 18
Intake Manifold Pressure critically low
Cummins ISX15 • Component: Turbocharger / Charge Air System • J1939
SPN 1077 FMI 14
High Pressure Fuel Rail Pressure
PACCAR MX-13 • Component: High Pressure Fuel Pump / Rail • J1939
SPN 4364 FMI 18
SCR Inducement Active
Cummins X15 • Component: Selective Catalytic Reduction (SCR) System • J1939
SPN 641 FMI 5
VGT Turbo Actuator
International A26 • Component: Variable Geometry Turbocharger (VGT) Actuator • J1939
SPN 174 FMI 0
Fuel Temperature
Volvo D13 • Component: Fuel Temperature Sensor / Fuel Cooler • J1939
MID 128 PID 102 FMI 3
Boost Pressure Sensor
Cummins ISX15 • Component: Intake Manifold Pressure Sensor • J1587
SPN 100 FMI 7
Engine Oil Pressure Abnormal
Volvo D13 • Component: Engine Oil Pressure Sensor / Oil Pump • J1939
SPN 105 FMI 3
Intake Manifold Temperature Sensor
Volvo D13 • Component: Intake Manifold Air Temperature (IAT) Sensor • J1939
SPN 5202 FMI 19
Engine Configuration Error
Volvo D13 • Component: Engine Control Module (ECM) Configuration • J1939
SPN 1569 FMI 31
Engine Protection Torque Derate
International A26 • Component: Engine Control Module (ECM) / Engine Protection System • J1939
SPN 3361 FMI 7
DPF Differential Pressure Fault
International A26 • Component: DPF Differential Pressure Sensor / DPF Assembly • J1939
SPN 3480 FMI 4
Intake Manifold Pressure Sensor
International A26 • Component: Intake Manifold Pressure (MAP) Sensor / Wiring • J1939
SPN 106 FMI 0
Air Filter Restriction High
International A26 • Component: Air Filter Differential Pressure Sensor / Air Intake • J1939
SPN 164 FMI 0
Engine Oil Level High
International A26 • Component: Engine Oil Level Sensor / Oil Pan • J1939
SPN 3031 FMI 16
Exhaust Gas Temperature High
International A26 • Component: Aftertreatment Exhaust Gas Temperature (EGT) Sensor • J1939
SPN 1569 FMI 31
Engine Protection Torque Derate
Detroit Diesel DD13 • Component: Engine Control Module (ECM) / Engine Protection System • J1939
SPN 3361 FMI 7
DPF Differential Pressure Fault
Detroit Diesel DD13 • Component: DPF Differential Pressure Sensor / DPF Assembly • J1939
SPN 108 FMI 3
Barometric Pressure Sensor Fault
Detroit Diesel DD13 • Component: Barometric Pressure Sensor / ECM (Integrated) • J1939
SPN 4251 FMI 0
DOC Outlet Temperature High
Detroit Diesel DD13 • Component: DOC Outlet Temperature Sensor / Aftertreatment • J1939
SPN 5203 FMI 14
EGR Delta Pressure Fault
Detroit Diesel DD13 • Component: EGR Differential Pressure Sensor / EGR System • J1939
SPN 1569 FMI 31
Engine Protection Torque Derate
PACCAR MX-13 • Component: Engine Control Module (ECM) / Engine Protection System • J1939
SPN 677 FMI 5
Turbocharger Actuator Fault
PACCAR MX-13 • Component: Turbocharger Wastegate Actuator / Turbo Control • 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 engine derate based on SAE J1939/J1587 fault code definitions and OEM service documentation.