MTU 12V4000Bx4 Operating Instructions Manual page 219

1170 – AL Permanent Injection
Cause
The ECU has detected continuous
injection at one or more injectors
based on the pressure gradient in
the HP fuel system (B48).
1174 – HI T-Fuel f(T0)
Cause
The charge-air pressure at sensor
B33 has violated upper limit value
1. The fuel temperature is too
high.
1175 – SS T-Fuel f(T0)
Cause
The charge-air pressure at sensor
B33 has violated upper limit value
1. The fuel temperature has
violated the critical upper limit
value.
1376 – AL Refdrive Impossibl Ubat Low
Cause
The ECU supply voltage is two low
for successful homing of all flaps
even when the engine is running.
1377 – AL Refdrive Impossibl Eng Op Point
Cause
Homing of one or more flaps
before engine start was not
completed successfully. Homing
the affected flaps is no longer
possible.
Corrective action
u Contact Service.
Corrective action
1. Reduce power.
2. Check fuel cooling system (if applicable).
3. Contact Service.
Corrective action
1. Reduce power.
2. Check fuel cooling system (if applicable).
3. Contact Service.
Corrective action
1. Check condition of batteries (plant).
2. Check plug connections to Engine Control Unit (→ Page 334).
3. Contact Service.
Corrective action
1. Run engine up to idling speed. Result: Homing is executed.
2. Contact Service.
MS15038/01E 2018-11 | Troubleshooting | 217