Detroit DD13 EPA07 (2007-09) Fault Code: SPN 3246 FMI 16 (MCM) Diesel Particulate Filter Outlet Temperature – High

Posted by PerDiezel Solutions on March 8, 2026

NOTE: This is a silent fault (no dashboard warning lamp). Indicates the motor control module (MCM) has detected a diesel particulate filter (DPF) outlet temperature that is higher than expected.

NOTE: If 3246-0 active, fix that first.

NOTE: If 3246-8 active, fix that first.

NOTE: If 3246-16 has more than 5 counts, use 3246-0.

PROBABLE CAUSES:
Perform a parked regen.

WARNING!