We're still looking for the perfect video. Got any ideas? Share them with us! Login
Volvo Engine Code MID 128 PPID 122 FMI 3
MID 128 PPID 122 Engine Compression Brake Type of fault: FMI 3 FMI Description: • Voltage above normal or shorted to high source Fault Condition: • Short 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