Group 28 Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs) ECM SPN 5246, Aftertreatment SCR Operator Inducement Severity – MID 128 PSID 46 83 FMI 4 • Voltage below normal, or shorted to low source • Short circuit - • Yellow electronic malfunction lamp illuminated • Faulty harness • Faulty harness connector • Faulty sensor FMI 5 • Current below normal or open circuit • Open circuit • Yellow electronic malfunction lamp illuminated • Faulty harness • Faulty harness connector • Faulty sensor Type of fault: FMI Description: Fault Condition: Possible Symptoms: Possible Cause:
FMI 0 • Data valid but above normal operational range - Most severe level • Severe SCR system fault detected – Warning fault • Severe engine derate • N/A FMI 15 • Data valid but above normal operating range - Least severe level • Moderate SCR system fault detected – Warning fault • Moderate engine derate • N/A FMI 16 • Data valid but above normal operating range - Moderately severe level • SCR system fault detected – Warning fault • Engine derate • N/A