Detroit DD15 EPA10 (2010-13) Fault Code: SPN 1761 FMI 31 (ACM) Diesel Exhaust Fluid (DEF) Tank Level 3 Condition – Tank Level Very Low

NOTE: This fault indicates that the DEF tank level is very low. DEF must be added to the DEF tank (minimum 1/4 tank). After refill, idle engine for five minutes.