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Detroit DD13 EPA10 (2010-13) Fault Code: SPN 3250 FMI 8 (ACM) Diesel Oxidation Catalyst Outlet Temperature – Signal Spike

DESCRIPTION:This fault indicates the aftertreatment control module (ACM) has detected a sudden temperature shift on the diesel oxidation catalyst (DOC) outlet temperature sensor.

MONITORED PARAMETER:DOC outlet temperature.

TYPICAL ENABLING CONDITIONS:DOC outlet temperature greater than 150°C (302°F).

MONITOR SEQUENCE:None

EXECUTION FREQUENCY:None

TYPICAL DURATION:10 seconds

DASH LAMPS:1. CEL2. MIL

ENGINE REACTION:None

VERIFICATION:Low temp ATD check.

POSSIBLE CAUSES:1. Wiring concern.2. Poor terminal fit.3. Corrosion.4. Chaffing.

NOTE: If codes 3250-3 or 3250-4 active, fix those first.

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

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