MTU 12 V 4000 L62FB Operating Instructions Manual page 122

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
660 – AL PhytronA Comm Lost
Red alarm
Associated parameter 1.4570.096
Cause
CAN bus communication for step
motor for gas mixer A faulty
(alternatively, a gas control valve
can be installed)
661 – AL PhytronB Comm Lost
Red alarm
Associated parameter 1.4570.196
Cause
CAN bus communication for step
motor for gas mixer A faulty
(alternatively, a gas control valve
can be installed)
664 – AL Oil Refill Error
Red alarm
Associated parameter 1.1480.305
Cause
Combined alarm for automatic oil
replenishment faulty
122 | Troubleshooting | MS150098/02E 2016-11
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
1. Check cabling.
2. Check power supply.
3. Carry out restart of ECU, EMU & throttle B.
4. Check settings with device-specific dialog software (XD11.1).
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 (XD11.2)
Corrective action
u After initiation of the alarms "HI Oil Refill" and
"HI Lube Oil Level refill" a configurable timeout period starts. The
engine is stopped when this time expires.