418 – SD T-Intake Air B
Yellow alarm.
Associated parameter 1.8004.603
Cause
Corrective action
Intake air temperature sensor
defective, short circuit or wire
break.
u
Check sensor and cabling (B49.2), replace as necessary.
419 – SD T-Coolant before Engine
Red alarm.
Associated parameter 1.8004.604
Cause
Corrective action
Coolant temperature sensor at
engine inlet defective, short
circuit or wire break.
u
Check sensor and cabling (B6.3), replace as necessary.
423 – LO P-Coolant Diff.
Red alarm. Engine shutdown.
Associated parameter 2.0180.921
Cause
Corrective action
Coolant differential pressure too
low (limit value 1). Insufficient
volume flow.
u
Check engine coolant circuit (pressure and flow).
429 – HI P-Coolant
Red alarm. Engine shutdown.
Associated parameter 2.0101.931
Cause
Corrective action
Coolant pressure after engine
too high (limit value 3).
u
Check engine coolant circuit (pressure and flow).
430 – LO P-Coolant before Engine
Yellow alarm.
Associated parameter 2.0168.921
Cause
Corrective action
Coolant pressure before engine
too low (limit value 1).
Insufficient volume flow, static
pressure too low.
u
Check engine coolant circuit (pressure and flow).
110 | Troubleshooting | MS150115/00E 2013-10
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