Scr Warning — Possible Fault Codes
Found 1 fault code associated with scr warning. Codes are sorted by severity — check STOP ENGINE codes first.
SPN 1761 FMI 18
DEF Tank Level critically low
Detroit Diesel DD15 • Component: DEF Tank / DEF Level Sensor • 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 scr warning based on SAE J1939/J1587 fault code definitions and OEM service documentation.