Detroit DD13 EPA07 (2007-09) Fault Code: SPN 3250 FMI 31 (MCM) Abnormal Diesel Oxidation Catalyst Temperature Rise

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

PROBABLE CAUSES:
1. Turbocharger compressor inlet sensor.
2. Turbocharger compressor inlet sensor harness/connector.
3. DOC outlet temperature sensor.
4. DOC outlet temperature sensor harness/connector.