Group 28 Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs) ECM SPN 3471, Aftertreatment Fuel Pressure Control Actuator/ MP7 Engine MID 128 PSID 111 62 FMI 7 • Mechanical system not responding or out of adjustment • Aftertreatment hydrocarbon doser fuel pressure too low • MIL illuminated • Yellow electronic malfunction lamp illuminated • Regeneration not possible • Fuel shut off valve stuck open • Faulty fuel pressure sensor FMI 14 • Special instructions • Aftertreatment hydrocarbon doser fuel pressure too high • MIL illuminated • Yellow electronic malfunction lamp illuminated • Regeneration not possible • Fuel shut off valve leakage 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 • Faulty connector • Faulty aftertreatment fuel pump 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 • Faulty connector • Faulty aftertreatment fuel pump FMI 5 • Current below normal or open circuit • Open circuit • MIL illuminated • Yellow electronic malfunction lamp illuminated • Regeneration not possible • Faulty harness • Faulty connector • Faulty aftertreatment fuel pump