MTU 20 V 4000 G23, Technical Publication

Page: 84 / 178

Troubleshooting 79
Fault
code No. Designation Meaning Task
Related
parameter No.
187 AL CAN1 Error Passive Alarm configuration; CAN
controller 1 has signalled a
warning.
1. Inspect CAN
bus for short
circuit and
rectify short
circuit as
necessary.
2. Check
shielding,
improve as
necessary.
3. Contact
Service.
2.0500.687
188 AL CAN2 Bus Off Alarm configuration; CAN
controller 2 is in "Bus-Off"
status. Automatic changeover
to CAN 1; Short circuit,
massive interference or Baud
rate incompatibility.
1. Inspect CAN
bus for short
circuit and
rectify short
circuit as
necessary.
2. Check
shielding,
improve as
necessary.
3. Contact
Service.
2.0500.688
189 AL CAN2 Error Passive Alarm configuration; CAN
controller 2 has signalled a
warning.
1. Inspect CAN
bus for short
circuit and
rectify short
circuit as
necessary.
2. Check
shielding,
improve as
necessary.
3. Contact
Service.
2.0500.689
190 AL EMU Parameter Not
Supported
Alarm configuration; EMU
parameter are not supported. Contact Service.
2.0500.690
201 SD T-Coolant SD alarm configuration;
Coolant temperature sensor
faulty; short circuit or wire
break.
Check sensor and
cabling (B6), replace
as necessary.
Error cleared after
restarting the engine.
1.8004.570
202 SD T-Fuel SD alarm configuration; Fuel
temperature sensor faulty;
short circuit or wire break.
Check sensor and
cabling (B33),
replace as necessary.
Error cleared after
restarting the engine.
1.8004.572
203 SD T-Charge Air SD alarm configuration;
Charge-air temperature sensor
faulty; short circuit or wire
break.
Check sensor and
cabling (B9), replace
as necessary.
Error cleared after
restarting the engine.
1.8004.571
M015715/00E 06-08 © MTU