MTU 8 V 4000 Lx2 xx Operating Instructions Manual page 123

657 – AL ProActB Comm Lost
Red alarm.
Associated parameter 1.4550.196
Cause
CAN bus communication for
throttle B faulty.
658 – AL NOxA Comm Lost
Red alarm.
Associated parameter 1.4560.096
Cause
CAN bus communication for
NOx sensor A faulty.
659 – AL NOxB Comm Lost
Red alarm.
Associated parameter 1.4560.196
Cause
CAN bus communication for
NOx sensor B faulty.
664 – AL Oil Refill Error
Red alarm.
Associated parameter 1.1480.305
Cause
Combined alarm for automatic
oil replenishment faulty.
665 – AL GET Yellow
Yellow alarm.
Associated parameter 1.4510.993
Cause
An internal combined alarm in
knock control was detected.
Corrective action
1. Check cabling.
2. Check power supply.
3. Carry out restart of ECU, EMU & throttle B.
4. Check settings with device-specific dialog software (XD50.2).
Corrective action
1. Check cabling.
2. Check power supply.
3. Carry out restart of ECU and EMU.
4. Replace sensor.
Corrective action
1. Check cabling.
2. Check power supply.
3. Carry out restart of ECU and EMU.
4. Replace sensor.
Corrective action
u After initiation of the alarms "HI Oil Refill" and
"HI Lube Oil Level refill" a programmable timeout period starts.
The engine is stopped when this time expires.
Corrective action
u An exact fault designation is transmitted via CAN bus to the
genset control system.
MS150114/01E 2015-03 | Troubleshooting | 123