Technical data

Troubleshooting 5–05
Fault code Alarm text Meaning Task
023 L1 COOLANT
LEVEL
Engine coolant level too low Check coolant level and top up, if required
(→ Page 6 – 46) .
024 L2 COOLANT
LEVEL
Engine coolant level too low Check coolant level and top up, if required
(→ Page 6 – 46) .
030 ENGINE
OVERSPEED
Engine overspeed; automatic
engine shutdown
1. Acknowledge alarm.
2. Try to re-start the engine
(→ Page 3 – 03).
3. Contact Service.
044 L1 LEVEL
INTERCOOLER
Charge-air coolant level too
low (1st limit)
Check coolant level and top up, if required
(→ Page 6 – 52) .
045 L2 LEVEL
INTERCOOLER
Charge-air coolant level too
low (2nd limit)
1. Check coolant level and top up, if
required (→ Page 6 – 52) .
2. If fault occurs repeatedly: Contact
Service.
051 L1 T-LUBE OIL Lube-oil temperature too high
(1st limit)
Reduce power.
052 L2 T-LUBE OIL Lube-oil temperature too high
(2nd limit)
1. Reduce power.
2. If fault occurs repeatedly: Contact
Service.
065 L1 P-FUEL Fuel supply pressure too low
(1st limit)
1. Check fuel lines for leaks; repair
defective lines.
2. Clean fuel prefilter (→ Page 6 – 26).
3. Flush fuel prefilter (→ Page 6 – 30).
4. Replace filter element of fuel prefilter
(→ Page 6 – 32).
5. Replace filter element of fuel prefilter
(→ Page 6 – 25).
6. If fault is not rectified: Contact
Service.
066 L2 P-FUEL Fuel supply pressure too low
(2nd limit)
1. Check fuel lines for leaks; repair
defective lines.
2. Clean fuel prefilter (→ Page 6 – 26).
3. Flush fuel prefilter (→ Page 6 – 30).
4. Replace filter element of fuel prefilter
(→ Page 6 – 32).
5. Replace filter element of fuel prefilter
(→ Page 6 – 25).
6. If fault is not rectified: Contact
Service.
067 L1 T-COOLANT Coolant temperature too high
(1st limit); warning
Reduce power.
068 L2 T-COOLANT Coolant temperature too high
(2nd limit);
automatic engine shutdown
1. Allow the engine to cool down.
2. Check coolant cooler (elements etc.)
and clean contaminated parts (see
manufacturer’s documentation).
3. Re-start the engine (→ Page 3 – 03).
4. If fault occurs repeatedly: Contact
Service.
M015560/00E 03-05 ©MTU