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Detroit DD15 EPA07 (2007-09) Fault Code: SPN 3246 FMI 4 (MCM) Diesel Particulate Filter Outlet Temperature Circuit Failed Low

NOTE: If codes 3246-3, 3242-3, 3250-3 or 1172-3 active, fix those first.

PROBABLE CAUSES:
Wiring between the turbocharger compressor inlet temperature and the 120-pin MCM connection.