Technical data

5–08 Troubleshooting
Fault code Alarm text Meaning Task
104 OP HOURS1
NOT VALID
Check sum error of hour meter
datainEDM
If fault occurs repeatedly: Contact Service.
105 OP HOURS2
NOT VALID
Check sum error of hour meter
datainIDM
If fault occurs repeatedly: Contact Service.
106 ERR REC1 NOT
VALID
Check sum error of fault
memory in EDM (redundant
data record 1)
If fault occurs repeatedly: Contact Service.
107 ERR REC2 NOT
VALID
Check sum error of fault
memory in EDM (redundant
data record 2)
If fault occurs repeatedly: Contact Service.
118 L1 SUPPLY
VOLT. LOW
Supply voltage too low (1st
limit)
Check ECU supply voltage.
119 L2 SUPPLY
VOLT. LOW
Supply voltage too low (2nd
limit)
Check ECU supply voltage.
120 L1 SUPPLY
VOLT. HIGH
Supply voltage too high(1st
limit)
Check ECU supply voltage.
121 L2 SUPPLY
VOLT. HIGH
Supply voltage too high (2nd
limit);
automatic engine shutdown
(depending on project design)
Check ECU supply voltage.
If engine was stopped: Start engine
(→ Page 3 – 03).
122 L1
T-ELECTRONIC
Temperature in ECU housing
toohigh(1stlimit)
1. Improve engine room ventilation.
2. Reduce engine power.
134 15V POS ECU
DEFECT
Electronic equipment
defective;
automatic engine shutdown
Contact Service.
136 15V NEG ECU
DEFECT
Electronic equipment
defective;
automatic engine shutdown
Contact Service.
137 L1 5V BUFFER
TEST
Power supply for pressure
sensors defective.
1. Disconnect connectors X2 and
X3 from ECU. If alarm does not
disappear: Contact Service.
2. Check wiring (pressure sensors).
3. Contact Service.
138 SENSORPOW-
ERDEFECT
Power supply for pressure
sensors defective.
1. Disconnect connectors X2 and
X3 from ECU. If alarm does not
disappear: Contact Service.
2. Check wiring (pressure sensors).
3. Contact Service.
1
39
L
1 TE BUFFER
TEST
I
nternal electronic fault
(temperature sensors)
C
ontact Service.
140 TE BUF. ECU
DEFECT
Internal electronic fault
(temperature sensors)
Contact Service.
142 BANK1 ECU
DE
FECT
Internal electronic fault;
Engine does not start
Contact Service.
M015560/00E 03-05 ©MTU