MTU Gas engine8 V 4000 L62 Operating Instructions Manual page 164

454 – SS Power Reduction Active
Yellow alarm.
Associated parameter 2.7000.011
Cause
Power reduction activated.
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
governor defective, short circuit
or wire break.
164 | Troubleshooting | MS150032/02E 2012-07
ZKP-Number:
Corrective action
u Rectify limit value violation of the source alarm (e.g. reduce
intake air temperature).
ZKP-Number:
Corrective action
u Check ventilation system.
ZKP-Number:
Corrective action
u Check ventilation system.
ZKP-Number:
Corrective action
u Check sensor and cabling (B16.3), replace if necessary. Fault is
rectified when engine is restarted.
ZKP-Number:
Corrective action
u Check sensor and cabling, replace as necessary. Fault is
rectified when engine is restarted.