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Volvo Engine Code MID 128 PID 411 FMI 2
MID 128 PID 411 EGR Exhaust Back Pressure Type of fault: FMI 2 FMI Description: • Data erratic, intermittent or incorrect Fault Condition: • EGR differential pressure sensor output is too high or too low Possible Symptoms: • Uneven running • Engine derate Possible Cause: • Faulty EGR Differential Pressure Sensor connector • Faulty EGR Differential Pressure Sensor harness • Faulty EGR Differential Pressure Sensor • EGR leakage • Clogged EGR cooler • Clogged EGR venturi