Group 28 Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs) ECM SPN 2629, Engine Turbocharger Compressor Outlet Temperature – MID 128 PID 404 ECM SPN 2659, Engine Exhaust Gas Recirculation (EGR) Mass Flow Rate MID 128 PPID 35 53 Type of fault: FMI Description: Fault Condition: Possible Symptoms: Possible Cause: FMI 0 • Data valid but above normal operational range - Most severe level • Estimated engine turbocharger discharge temperature error.
• Engine derate • High ambient temperature • Low barometric pressure • Leak in engine turbocharger inlet tube FMI 2 • Data erratic, intermittent or incorrect • Engine turbocharger outlet temperature signal believed to be not valid (high) (plausibility fault) • Engine derate • MIL illuminated • Engine turbocharger outlet temperature sensor FMI 4 • Voltage below normal, or shorted to low source • Short circuit -, measuring line • MIL illuminated • Yellow electronic malfunction lamp illuminated • Faulty sensor • Faulty harness FMI 5 • Current below normal or open circuit • Short circuit +, measuring line • Open circuit • MIL illuminated • Yellow electronic malfunction lamp illuminated • Faulty sensor • Faulty harness FMI 13 • Out of calibration • Sensor out of range • MIL illuminated • Faulty sensor FMI 15 • Data valid but above normal operating range - Least severe level • Sensor out of range • MIL illuminated • Faulty sensor FMI 17 • Data valid but below normal operating range - Least severe level • Sensor out of range • MIL illuminated • Faulty sensor Type of fault:
FMI Description: Fault Condition: Possible Symptoms: Possible Cause: FMI 0 • Data valid but above normal operational range • EGR fol w is too high • MIL illuminated • Exhaust smoke • Faulty EGR system