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Volvo Engine Code MID 128 PPID 122 FMI 4
MID 128 PPID 122 Engine Compression Brake Type of fault: FMI 4 FMI Description: • Voltage below normal or shorted low Fault Condition: • Short Circuit - Possible Symptoms: • Volvo Compression Brake (VCB) can not be turned off • Engine stops running • Engine impossible to restart Possible Cause: • Faulty Volvo Compression Brake (VCB) actuator • Faulty harness