MTU 8 V 4000 Lx2 xx Operating Instructions Manual page 126

680 – AL ProActB Red
Red alarm.
Associated parameter 1.4550.191
Cause
An internal combined alarm in
throttle B was detected.
681 – AL NOxA Red
Red alarm.
Associated parameter 1.4560.091
Cause
An internal combined alarm at
NOx sensor A was detected.
682 – AL NOxB Red
Red alarm.
Associated parameter 1.4560.191
Cause
An internal combined alarm at
NOx sensor B was detected.
685 – AL Lube Oil Min
Red alarm.
Associated parameter 1.1480.307
Cause
Minimum engine oil filling level
detected.
686 – AL Lube Oil Max
Red alarm.
Associated parameter 1.1480.309
Cause
Maximum engine oil filling level
detected.
688 – LO Oil Refill
Yellow alarm.
Associated parameter 1.1480.301
Cause
No oil replenishment within a
programmable time.
126 | Troubleshooting | MS150114/01E 2015-03
Corrective action
u An exact fault designation is transmitted via CAN bus to the
genset control system.
Corrective action
u An exact fault designation is transmitted via CAN bus to the
genset control system.
Corrective action
u An exact fault designation is transmitted via CAN bus to the
genset control system.
Corrective action
1. Check engine oil level (→ Page 153).
2. Check replenishment system.
3. Fill oil.
Corrective action
1. Check engine oil level (→ Page 153).
2. Check replenishment system.
3. Drain oil.
Corrective action
u Check oil replenishment system.