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Detroit DD15 GHG14 (2014-16) Fault Code: SPN 520332 FMI 17 (ACM) Diesel Oxidation Catalyst Inlet Temperature Out of Range Low Preventing HC Dosing

NOTE: The fault indicates that the High Idle Regen (HIR) was aborted due to the Diesel Oxidation Catalyst (DOC) inlet temperature not reaching the minimum of 270°C (518°F) to initiate dosing during an HIR .

DESCRIPTION:
DOC inlet temperature out of range low.

MONITORED PARAMETER:
Exhaust temperature.

TYPICAL ENABLING CONDITIONS:
Always on

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Continuous when enabling conditions met.

TYPICAL DURATION:
Two seconds

DASH LAMPS:
MIL

ENGINE REACTION:
None

VERIFICATION:
Parked regen

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

PROBABLE CAUSES:
1. Intake throttle valve.
2. Exhaust leaks.
3. Intake manifold leaks.
4. Intake air system leaks (Including charge air cooler).
5. Jake brake operation.
6. Thermostat.
7. DOC inlet temperature sensor.
8. DOC inlet temperature sesnor conncetor/harness.

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