MTU 16V4000Lx2x Operating Instructions Manual page 116

457 – LO T-Intake Air
Yellow alarm.
Associated parameter 2.0123.921
Cause
Intake air temperature is too low
(limit value 3).
458 – LOLO T-Intake Air
Red alarm. Engine shutdown.
Associated parameter 2.0123.922
Cause
Intake air temperature is too low
(limit value 4).
459 – SD P-Coolant b. Engine
Red alarm.
Associated parameter 1.8004.627
Cause
Coolant pressure sensor before
engine defective, short circuit or
wire break.
470 – SD T-ECU
Red alarm.
Associated parameter 1.8004.587
Cause
Temperature sensor for Engine
Control Unit defective, short
circuit or wire break.
472 – AL Stop SD
Red alarm. Engine shutdown.
Associated parameter 2.8006.593
Cause
Engine stop, since all shutdown
channels have "sensor failure".
476 – AL Crash Rec.Init Fault
Red alarm.
Associated parameter 1.8010.007
Cause
Initialization error of crash
recorder.
116 | Troubleshooting | MS150121/00E 2015-07
Corrective action
u Check ventilation system.
Corrective action
u Check ventilation system.
Corrective action
u Check sensor and cabling (B16.3), replace as necessary. Fault
is rectified following engine restart.
Corrective action
u Check sensor and cabling, replace as necessary. Fault is
rectified following engine restart.
Corrective action
u Combined alarm (for details, refer to the source alarm).
Corrective action
u Contact Service.