MTU 12V4000Gx5S Series Operating Instructions Manual page 147

727 – AL L1 Delta T-NT Intercooler
Cause
The differential temperature at
sensors B26 and B90 has violated
limit value 1. The LT coolant inlet
temperature is too high in relation
to the ambient air temperature.
729 – AL_HI1_T_Exh_DPFsys_inl_F1
Cause
The exhaust gas temperature
before the DOC measured at
sensor B4.33 has violated limit
value 1. The exhaust gas
temperature before the DOC is
too high.
730 – AL_HI2_T_Exh_DPFsys_inl_F1
Cause
The exhaust gas temperature
before the DOC measured at
sensor B4.33 has violated limit
value 2. The exhaust gas
temperature before the DOC is
too high.
731 – AL L1 T-Exhaust DPF Inlet 1
Cause
The exhaust gas temperature
before the DPF measured at
sensor B4.31 has violated limit
value 1. The exhaust gas
temperature before the DPF is too
high.
732 – AL L2 T-Exhaust DPF Inlet 1
Cause
The exhaust gas temperature
before the DPF measured at
sensor B4.31 has violated limit
value 2. The exhaust gas
temperature before the DPF is too
high.
Corrective action
1. Check cooler (plant side) for contamination.
2. Check operation of fan (plant side).
3. Contact Service.
Corrective action
u Contact Service.
Corrective action
u Contact Service.
Corrective action
u Contact Service.
Corrective action
u Contact Service.
MS15065/01E 2019-01 | Troubleshooting | 145