MTU 12 V 4000 M33F Operating Instructions Manual page 148

454 – SS Power Reduction Active
Power reduction activated
Red alarm - power reduction activated
Cause
Engine operation outside
standard limit values.
This message has the following
possible causes: Intake
depression, exhaust back
pressure, charge-air coolant
temperature or intake air
temperature outside the limit
values
455 – AL L1 Aux1 Plant
Limit value 1
Cause
Input signal of Aux 1 (plant side)
has exceeded/not attained limit
value 1, depending on
configuration.
456 – AL L2 Aux1 Plant
Limit value 2
Cause
Input signal of Aux 1 (plant side)
has exceeded/not attained limit
value 2, depending on
configuration.
460 – HI T-Exhaust EMU
Limit value 1
Cause
EMU exhaust gas temperature
value too high.
148 | Troubleshooting | MS150069/02E 2014-03
ZKP-Number: 2.7000.011
Corrective action
u Check for additional messages.
ZKP-Number: 2.8006.650
Corrective action
u Determine cause of limit value violation and rectify fault.
ZKP-Number: 2.8006.651
Corrective action
u Determine cause of limit value violation and rectify fault.
ZKP-Number: 2.8006.652
Corrective action
1. Check wiring.
2. Contact Service.