Diagnostic Trouble Codes Group 30: Electrical system
122
MID 128, SID 70
Preheat sense
MID 128: Engine control unit
FMI 3: The voltage exceeds the normal value or is
short circuited to higher voltage.
FMI 4: The voltage is less than the normal value or
is short circuited to lower voltage.
FMI 5: The current is less than the normal value or
is open circuited.
FMI Fault code explanation
3, 4, 5 Faulty relay / Faulty relay circuit
Fault indication
DCU: Engine warning in DCU display.
CIU: None
Flash code
Electrical fault: None
Value fault: None
Symptom
FMI 3: Fuse for shorting wire breaks.
FMI 4: Start problems in cold climate.
FMI 5: Might get start problems in cold climate.
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