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Limp Mode — Possible Fault Codes
Found 6 fault codes associated with limp mode. Codes are sorted by severity — check STOP ENGINE codes first.
⚠️ 5 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 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 1569 FMI 31
Engine Protection Torque Derate
Detroit Diesel DD13 • Component: Engine Control Module (ECM) / Engine Protection 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 limp mode based on SAE J1939/J1587 fault code definitions and OEM service documentation.