Group 28 Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs) ECM SPN 3489, Aftertreatment Air Enable Actuator – MID 128 PSID 122 69 FMI 3 • Voltage above normal, or shorted to high source • Circuit shorted + • MIL illuminated • Yellow electronic malfunction lamp illuminated • Regeneration not possible • Soot build up • Faulty harness • Faulty connector • Faulty sensor FMI 5 • Current below normal or open circuit • Open circuit • MIL illuminated • Yellow electronic malfunction lamp illuminated • Regeneration not possible • Soot build up • Faulty harness • Faulty connector • Faulty sensor FMI 7 • Mechanical system not responding or out of adjustment • Air pressure mechanical regulator fault • Yellow electronic malfunction lamp illuminated • Regeneration not possible • Soot build up • Faulty aftertreatment DPF atomization module air pressure regulator FMI 10 • Abnormal rate of change • Aftertreatment DPF atomization module, air bleed orifci e fault • MIL illuminated • Yellow electronic malfunction lamp illuminated • Regeneration not possible • Soot build up • Clogged internal bleed orifice FMI 14 • Special instructions • Air pressure sensor or aftertreatment DPF atomization module air valve fault • MIL illuminated • Yellow electronic malfunction lamp illuminated • Regeneration not possible • Soot build up • Aftertreatment DPF air shutoff valve • Faulty air pressure sensor • Faulty atomization air valve Type of fault:
FMI Description: Fault Condition: Possible Symptoms: Possible Cause: FMI 2 • Data erratic, intermittent or incorrect • Exhaust oxygen deemed too low • MIL illuminated • Yellow electronic malfunction lamp illuminated • Regeneration not possible • Possible soot buildup • Faulty combustion air valve