MTU 12V 4000 L32 F Operating Instructions Manual page 155

671 – AL NOxA Yellow
Yellow alarm.
Associated parameter 1.4560.093
Cause
An internal summary alarm at NOx
sensor A was detected.
672 – AL NOxB Yellow
Yellow alarm.
Associated parameter 1.4560.193
Cause
An internal summary alarm at NOx
sensor B was detected.
675 – AL GET Red
Red alarm.
Associated parameter 1.4510.991
Cause
An internal summary alarm in
knock control was detected.
676 – AL IC92x Red
Red alarm.
Associated parameter 1.4520.991
Cause
An internal summary alarm in the
ignition system was detected.
677 – AL FSeries Red
Red alarm.
Associated parameter 1.4530.991
Cause
An internal summary alarm in the
bypass flap was detected.
678 – AL TecJet Red
Red alarm.
Associated parameter 1.4540.991
Cause
An internal summary alarm in the
gas control valve was detected.
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
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.
MS150104/02E 2016-11 | Troubleshooting | 155