Group 28 Troubleshooting MID 128 PID 108 Atmospheric Pressure 24 Type of fault: FMI Description: Fault Condition: Possible Symptoms: Possible Cause:
FMI 2 • Data erratic, intermittent or incorrect • Atmospheric Pressure Sensor output is too high or too low (abnormal value) • Minor engine derate • Faulty Atmospheric Pressure Sensor • Faulty Engine Management System (EMS) Module FMI 3 • Voltage above normal or shorted to high source • Short to battery on the metering side • N/A • Internal fault in the Engine Management System (EMS) Module • Faulty Atmospheric Pressure Sensor FMI 4 • Voltage below normal or shorted to low source • A short to ground on the metering side • N/A • Internal fault in the Engine Management System (EMS) Module • Faulty Atmospheric Pressure Sensor