Mack Trucks — Mack Trucks Service Manual ECM DTC Guide 2010 Emissions MRU

Group 28 Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs) ECM SPN 177, Transmission Oil Temperature – MID 128 PID 177 ECM SPN 188, Engine Speed At Idle, Point 1 (Engine Configurations) MID 128 PID 188 26 FMI 5 • Current below normal or open circuit • Short circuit +, measuring line • Open circuit • MIL illuminated (13L engine only) • Yellow electronic malfunction lamp illuminated • Engine Oil Temperature (EOT) sensor failure • Faulty harness FMI 13 • Out of Calibration • Sensor out of range • Sensor indicates a invalid value • MIL illuminated • Engine Oil Temperature (EOT) sensor failure FMI 16 • Data valid but above normal operating range - Moderately severe level • Extreme driving conditions • Engine oil temperature is moderately too high • Yellow electronic malfunction lamp illuminated • Engine derate • Extreme driving conditions • Engine cooling fan • Oil thermostat • Coolant system • Clogged oil cooler FMI 17 • Data valid but below normal operating range - Least severe level • Sensor out of range • Sensor indicates a invalid value • MIL illuminated • Engine Oil Temperature (EOT) sensor failure Type of fault:

FMI Description: Fault Condition: Possible Symptoms: Possible Cause: FMI 0 • Data valid but above normal operational range - Most severe level • Oil temperature critically above range • Red engine shutdown lamp illuminated • Transmission oil cooler • Coolant system FMI 16 • Data valid but above normal operating range - Moderately severe level • Oil temperature is moderately too high • Yellow electronic malfunction lamp illuminated • Extreme driving conditions • Engine cooling fan • Oil thermostat • Coolant system • Clogged oil cooler Type of fault: FMI Description: Fault Condition: Possible Symptoms: Possible Cause:

FMI 0 • Data valid but above normal operational range - Most severe level • Engine idle speed above desired speed • MIL illuminated • High engine oil consumption • High fuel consumption • Engine oil entering cylinders • Leaking or faulty fuel injector