Fault code
Alarm text
Meaning
Task
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 shut‐
down (depending on
project design).
Check ECU supply voltage.
If engine was stopped: Start engine
(→ Page 35).
122
L1 T-ELECTRONIC
Temperature in ECU hous‐
ing too high (1st limit)
1. Improve engine room ventila‐
tion.
2. Reduce engine power.
134
15V POS ECU DE‐
FECT
Electronic equipment de‐
fective;
Automatic engine shut‐
down.
Contact Service.
136
15V NEG ECU DE‐
FECT
Electronic equipment de‐
fective;
Automatic engine shut‐
down.
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 sen‐
sors).
3. Contact Service.
138
SENSORPOWER‐
DEFECT
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 sen‐
sors).
3. Contact Service.
139
L1 TE BUFFER
TEST
Internal electronic fault
(temperature sensors)
Contact Service.
140
TE BUF. ECU DE‐
FECT
Internal electronic fault
(temperature sensors)
Contact Service.
142
BANK1 ECU DE‐
FECT
Internal electronic fault;
Engine does not start
Contact Service.
144
BANK2 ECU DE‐
FECT
Internal electronic fault;
Engine does not start.
Contact Service.
145
15V_GOOD ECU
DEFECT
Electronic equipment de‐
fective;
Automatic engine shut‐
down.
Contact Service.
146
L1 AD-TEST1 SUP‐
PLY
A/D-converter supply volt‐
age too low.
Contact Service.
48 | Troubleshooting | M015675/05E 2011-10
TIM-ID: 0000003161 - 001
