Limp Mode — Possible Fault Codes
Found 1 fault code associated with limp mode. Codes are sorted by severity — check STOP ENGINE codes first.
⚠️ 1 STOP ENGINE-level code associated with this symptom. Do not continue driving.
SPN 1569 FMI 31
Engine Protection Torque Derate
Cummins ISX15 • Component: Engine Control Module (ECM) • 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.