MTU 12 V 4000 G23 Technical Documentation Manual page 95

Troubleshooting
Fault
code No. Designation
412 HI U-PDU
413 HIHI U-PDU
414 HI Water Level Fuel
Prefilter
415 LO P-Coolant
Intercooler
416 SS P-Coolant
Intercooler
417 SD Water Level Fuel
Prefilter
420 L1 Aux 1
421 L2 Aux 1
428 L1 T-Aux 1
432 L1 T-Aux 2
M015710/01E 07-02
Meaning
Alarm configuration limit
value 1; Preliminary warning:
Injector voltage too high.
Alarm configuration limit value
2; Main warning: Injector
voltage too high.
Alarm configuration limit value
1; Warning: water level in fuel
prefilter too high.
Alarm configuration limit
value 1; Preliminary warning:
Coolant pressure in intercooler
too low.
Alarm configuration limit value
2; Main warning: Coolant
pressure in intercooler too low.
Engine stop.
SD alarm configuration;
Sensor for water level in fuel
prefilter faulty; short circuit or
wire break.
Alarm configuration limit
value 1; Input signal of Aux
1 has exceeded/not attained
limit value 1, depending on
configuration.
Alarm configuration limit
value 1; Input signal of Aux
1 has exceeded/not attained
limit value 2, depending on
configuration.
Alarm configuration limit
value 1; Preliminary warning:
Temperature signal of Aux 1
has exceeded / not attained
limit value 1, depending on
configuration.
Alarm configuration limit
value 1; Preliminary warning:
Temperature signal of Aux 2
has exceeded / not attained
limit value 1, depending on
configuration.
Task
1. Check cabling
2. Check power
supply.
3. Contact
Service.
1. Check cabling
2. Check power
supply.
3. Contact
Service.
Drain water
(→ Page 118).
Top up coolant
(→ Page 147).
Top up coolant
(→ Page 147).
Check sensor and
cabling, replace as
necessary.
Error cleared after
restarting the engine.
Determine and rectify
reason for limit value
violation.
Determine and rectify
reason for limit value
violation.
Determine and rectify
reason for limit value
violation.
Determine and rectify
reason for limit value
violation.
91
Related
parameter No.
2.0141.931
2.0141.932
2.0156.931
2.0107.921
2.0107.922
1.8004.594
2.0160.921
2.0160.922
2.0130.921
2.0131.921
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