Volvo Engine Code MID 128 PID 354 FMI 3

MID 128 PID 354 Relative Humidity Type of fault: FMI 3 FMI Description: • Voltage above normal or shorted to high source Fault Condition: • Short to battery in the metering circuit of the Relative Humidity Sensor • Open in the ground circuit of the Relative Humidity Sensor Possible Symptoms: • Turbocharger noise • Malfunction indicator lamp illuminated Possible Cause: • Faulty connector • Faulty Relative Humidity Sensor harness • Faulty Relative Humidity Sensor