Detroit DD15 EPA10 (2010-13) Fault Code: SPN 5246 FMI 15 (ACM) Regulatory Fault Ignored – Derate On
NOTE: For 2011 models, this code sets when the vehicle has been driven for 30 miles while a code is present for the DEF tank level, DEF metering valve, DEF pump, NOx sensors, Blocked DEF line, DEF quality, NOx efficiency, SCR harness and/or SCR sensor.
NOTE: For 2010 models, this code sets when the vehicle has been driven for 10 hours or 500 miles while a code is present for the DEF tank level, DEF metering valve, DEF pump, NOx sensors, Blocked DEF line, DEF quality, NOx efficiency, SCR harness and/or SCR sensor.
DESCRIPTION:
Regulatory fault ignored – derate on.
MONITORED PARAMETER:
SCR and DPF sensors.
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Always enabled
TYPICAL DURATION:
Two seconds
DASH LAMPS:
CEL
ENGINE REACTION:
25 percent derate
VERIFICATION:
1. Parked SCR efficiency test for extended SCR faults.
2. High idle regeneration for DPF and NOx faults.
NOTE: For 2010 emission engines, if 5246-0, 5246-15, or 5246-16 are the only faults present, please troubleshoot code 3361-7 instead.
NOTE: This is a government mandated code which informs users that fault code has been active for longer then a government specified time interval.
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