Detroit DD16 EPA10 (2010-13) Fault Code: SPN 3556 FMI 1 (ACM) Diesel Oxidation Catalyst (DOC) Outlet Temperature Does Not Increase Above the Modeled Threshold when Regeneration is Enabled
DESCRIPTION:
This code sets when the Diesel Oxidation Catalyst (DOC) outlet temperature does not increase above the modeled threshold when regeneration is enabled.
MONITORED PARAMETER:
DOC outlet temperature sensor.
TYPICAL ENABLING CONDITIONS:
1. Regeneration enabled.
2. 1100 to 2050 rpm.
3. 50% to 100% engine load.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Continuous when enabling conditions met.
TYPICAL DURATION:
20 seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
None
VERIFICATION:
Parked regeneration
NOTE: If codes 4077-0 or 3480-1 active, fix those first.
PROBABLE CAUSES:
1. Inspect entire exhaust system for leaks.
2. Inspect all 3 temperature sensors on the DPF/DOC system.
3. Inspect fuel line from doser block assy to the doser injection valve for kinks.
4. Remove the doser injection valve and coolant block from turbo outlet and inspect for carbon buildup. If present, replace the doser injector valve.
5. Clean the doser fuel lines.
6. Perform stationary regen.
7. Replace the HC doser block assy.
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