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Detroit DD15 EPA10 (2010-13) Fault Code: SPN 3250 FMI 20 (ACM) Diesel Oxidation Catalyst Temperature Drift – Inlet Low or Outlet High

DESCRIPTION:
70°C (126°F) difference during non-regeneration mode.

MONITORED PARAMETER:
Diesel Oxidation Catalyst (DOC) Inlet Temperature vs. DOC Outlet Temperature.

TYPICAL ENABLING CONDITIONS:
Coolant temperature greater than 60°C (140°F), Regen not active in last five minutes.

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Continuous when enabling conditions met.

TYPICAL DURATION:
One minute

DASH LAMPS:
1. CEL
2. MIL

ENGINE REACTION:
Regen Inhibit and 10% Engine Derate.

VERIFICATION:
Low Temperature Regen.

PROBABLE CAUSES:
1. DOC outlet temperature sensor harness/connector.
2. DOC outlet temperature sensor.

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