Detroit DD16 GHG14 (2014-16) Fault Code: SPN 3250 FMI 31 (ACM) Abnormal Diesel Oxidation Catalyst Temperature Rise

DESCRIPTION:
Abnormal diesel oxidation catalyst (DOC) temperature rise.

MONITORED PARAMETER:
DOC temperature

TYPICAL ENABLING CONDITIONS:
Always on

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Continuous when enabling conditions met.

TYPICAL DURATION:
Two seconds

DASH LAMPS:
1. MIL
2. CEL

ENGINE REACTION:
25% Derate

VERIFICATION:
Parked regen

NOTE: If any other codes are active, fix those first.

PROBABLE CAUSES:
1. Inspect all connectors upstream of the MCM (DOC outlet temperature, ATD harness 10-pin connector, VIH 31-pin connector, and ECM 120-pin connector).
2. DOC outlet temperature sensor.
3. DPF inlet pressure sensor.
4. DPF inlet pressure sensor connector/harness.
5. DPF outlet pressure sensor.
6. DPF outlet pressure sensor connector/harness.
7. DPF is contaminated with oil or coolant.
8. DOC failure.
9. Intake manifold or charge air cooler failure.
10. Intake manifold pressure sensor.
11. Turbocharger failure.
12. Fuel doser injector valve leaks.
13. Failed cylinder injectors.
14. DPF failure.
15. Perform a stationary regen.

Related

Categories DD16 GHG14 (2014-16), Detroit, DTC TRUCKS Tags 16, 2014, 31, 3250, Abnormal, ACM, Catalyst, Code, DD16, Detroit, Diesel, Fault, FMI, GHG14, oxidation, Rise, SPN, Temperature

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