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Detroit DD16 EPA07 (2007-09) Fault Code: SPN 3246 FMI 0 (MCM) Diesel Particulate Filter Outlet Temperature Very High

DESCRIPTION:
This code sets when the Diesel Particulate Filter (DPF) outlet temperature is greater than 760°C (1400°F) for more that two seconds.

MONITORED PARAMETER:
Diesel particulate filter outlet temperature sensor.

TYPICAL ENABLING CONDITIONS:
Always on

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Continuous when enabling conditions are met.

TYPICAL DURATION:
Two seconds

DASH LAMPS:
1. CEL
2. MIL

ENGINE REACTION:
25% Derate

VERIFICATION:
Parked regeneration

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

PROBABLE CAUSES:
1. DPF outlet temperature sensor.
2. DPF outlet temperature sensor connector/harness.
3. Failed injector/cylinder on one of the cylinders.
4. Failed DOC.
5. Failed DOC sensor.
6. Remove the Aftertreatment Device (DPF) and inspect for signs of soot. If present, find source (charge air cooler, EGR valve, turbocharger, intake throttle valve, exhaust pipe leaks, delta P sensor failure).
7. Failed DPF.

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