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Volvo Engine Code MID 128 PPID 122 FMI 5
MID 128 PPID 122 Engine Compression Brake Type of fault: FMI 5 FMI Description: • Current below normal or open circuit Fault Condition: • Open Circuit Possible Symptoms: • Volvo Compression Brake (VCB) can not be turned on • Engine brake function derated • Gear shift performance derated for some automatic transmission boxes Possible Cause: • Faulty Volvo Compression Brake (VCB) actuator • Faulty harness