Group 28 Troubleshooting MID 128 PID 412 EGR Temperature 32 Type of fault: FMI Description: Fault Condition: Possible Symptoms: Possible Cause:
FMI 0 • Data valid but above normal operational range — most severe level • N/A • Malfunction indicator lamp illuminated • Extreme driving conditions • EGR cooler failure FMI 4 • Voltage below normal or shorted low • Short to ground on the metering side of the EGR Sensor circuit • Engine responds poorly • Engine power will be derated according to the error torque map • Faulty EGR Temperature Sensor connector • Faulty EGR Temperature Sensor harness • Faulty EGR Temperature Sensor FMI 5 • Current below normal or open circuit • Short to battery in the metering side of the EGR Sensor circuit • Open in the metering side of the EGR Sensor circuit • Open circuit in the ground line of the EGR Sensor circuit • Engine responds poorly • Engine derate • Faulty EGR Temperature Sensor connector • Faulty EGR Temperature Sensor harness • Faulty EGR Temperature Sensor FMI 10 • Abnormal rate of change • EGR sensor is showing a constant value that will not change • Malfunction indicator lamp illuminated • Faulty EGR Temperature Sensor connector • Faulty EGR Temperature Sensor harness • EGR system leakage