MTU 12 V 2000 P12 Operating Instructions Manual page 67

Fault code Fault message
067 L1 T-COOLANT
068 L2 T-COOLANT
089 ENGINE SPEED
LOW
100 EDM NOT VALID
101 IDM NOT VALID
102 INVALID FUEL
CONS. 1
103 INVALID FUEL
CONS. 2
104 OP HOURS1 NOT
VALID
105 OP HOURS2 NOT
VALID
106 ERR REC1 NOT
VALID
107 ERR REC2 NOT
VALID
118 L1 SUPPLY VOLT.
LOW
119 L2 SUPPLY VOLT.
LOW
120 L1 SUPPLY VOLT.
HIGH
121 L2 SUPPLY VOLT.
HIGH
Meaning
Coolant temperature too
high (1st limit value);
Coolant temperature too
high (2nd limit value);
automatic engine shutdown
Engine speed has failed to
reach 200 rpm. Stop is ac‐
tivated.
Checksum error in Engine
Data Module EDM/EE‐
PROM 1.
Checksum error in Inter‐
face Data Module IDM/EE‐
PROM 2.
Invalid fuel consumption
display, checksum error in
EDM/EEPROM 1 (redun‐
dant data record 1).
Invalid fuel consumption
display, checksum error in
IDM/EEPROM 2 (redun‐
dant data record 2).
Checksum error of hour
meter in EDM/EEPROM 1
Checksum error of hour
meter in IDM/EEPROM 2
Checksum error of fault
memory in EDM/EE‐
PROM 1 (redundant data
record 1).
Checksum error of fault
memory in IDM/EE‐
PROM 2 (redundant data
record 2).
Supply voltage too low
(1st limit value)
Supply voltage too low
(2nd limit value)
Supply voltage too high
(1st limit value).
Supply voltage too high
(2nd limit value);
automatic engine shutdown
(configurable):
MS150025/02E 2012-10 | Troubleshooting | 67
Action
Reduce power.
1. Allow engine to cool down.
2. Contact Service
• Check engine coolant cooler,
clean if dirty (→ Engine
Workshop Manual).
3. Restart engine.
Check for additional messages.
Redundant design of EDM allows
engine management system to re‐
main operational.
Redundant design of EDM allows
engine management system to re‐
main operational.
Contact Service.
Contact Service.
Hour meter remains operational.
Hour meter remains operational.
Faults are still recorded.
Faults are still recorded.
Contact Service.
• Check engine governor supply
voltage.
Contact Service.
• Check engine governor supply
voltage.
Contact Service.
• Check engine governor supply
voltage.
Contact Service.
• Check engine governor supply
voltage.