Low Coolant Light — Possible Fault Codes
Found 1 fault code associated with low coolant light. Codes are sorted by severity — check STOP ENGINE codes first.
⚠️ 1 STOP ENGINE-level code associated with this symptom. Do not continue driving.
SPN 111 FMI 18
Engine Coolant Level critically low
Cummins ISX15 • Component: Coolant Level Sensor / Cooling System • 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 low coolant light based on SAE J1939/J1587 fault code definitions and OEM service documentation.