Group 30: Electrical system
Diagnostic Trouble Codes
133
MID 128, PSID 96
Rail pressure system
MID 128: Engine control unit
FMI 0:
The sensor value is valid but above the nor-
mal working range.
FMI 1:
The sensor value is valid but below the nor-
mal working range.
FMI 4:
The voltage is less than the normal value or
is short circuited to lower voltage.
FMI 7:
Mechanical fault. The system responds in-
correctly.
FMI 12:
Faulty unit or component.
FMI
Fault code explanation
0, 1, 4, 7, 12
Fault in rail pressure circuit
Fault indication
DCU:
Engine warning in DCU display.
CIU:
None
Lamp status
FMI 0, 12:
Yellow lamp
FMI 1, 4, 7:
Red lamp
Flash code
Electrical fault: 8.3
Value fault:
None
Symptom
FMI 0:
Engine derated: engine speed limita-
tion (1100 rpm). Full fuel flow delivery.
Limp home with pressure relief valve
opened.
FMI 1, 7, 12:
Engine derated: engine speed limita-
tion (1100 rpm). Fuel pressure limita-
tion (800 bar). Engine torque reduc-
tion.
FMI 4:
Engine derated: engine speed limita-
tion (1100 rpm). Fuel pressure limita-
tion (800 bar). Engine torque reduc-
tion. Engine shut off or difficult to
start.
