Group 28 Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs) ECM SPN 3556, Aftertreatment Hydrocarbon Doser/ MP8 Engine MID 128 PPID 329 73 FMI 16 • Data valid but above normal operating range - Moderately severe level • Aftertreatment Diesel Exhaust Fluid (DEF) level change too much • N/A • DEF system leak • Wrong DEF tank • Aftertreatment DEF Dosing Module failure or wrong module FMI 18 • Data valid but below normal operating range - Moderately severe level • Aftertreatment Diesel Exhaust Fluid (DEF) level change too little • N/A • DEF tank level sensor stuck • DEF system clog • Wrong DEF tank • Aftertreatment DEF Dosing Module failure or wrong module Type of fault:
FMI Description: Fault Condition: Possible Symptoms: Possible Cause:
FMI 3 • Voltage above normal, or shorted to high source • Circuit shorted to battery • MIL illuminated • Yellow electronic malfunction lamp illuminated • Regeneration not possible • Faulty harness • Aftertreatment hydrocarbon doser failure FMI 4 • Voltage below normal, or shorted to low source • Circuit shorted to ground • MIL illuminated • Yellow electronic malfunction lamp illuminated • Regeneration not possible • Faulty harness • Aftertreatment hydrocarbon doser failure FMI 5 • Current below normal or open circuit • Open circuit • MIL illuminated • Yellow electronic malfunction lamp illuminated • Regeneration not possible • Faulty harness • Aftertreatment hydrocarbon doser failure FMI 13 • Out of calibration • Aftertreatment hydrocarbon doser clogged • MIL illuminated • Aftertreatment hydrocarbon doser failure • Fuel shut off valve • Fuel supply failure FMI 14 • Special instructions • Aftertreatment hydrocarbon doser leaking • MIL illuminated • Yellow electronic malfunction lamp illuminated • Regeneration not possible • Aftertreatment hydrocarbon doser failure