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Volvo Engine Code MID 128 PID 173 FMI 4
MID 128 PID 173 Exhaust Temperature Type of fault: FMI 4 FMI Description: • Voltage below normal or shorted low Fault Condition: • Short to ground on the metering side of the circuit Possible Symptoms: • Poor driveability Possible Cause: • Sensor failure • Faulty harness