Scania fault code 6677

Code 6677 is used by 3 different Scania systems. Choose the control unit shown in your diagnostic tool:

EMD DTC set upon SecOC EMS NOx ATO (downstream) is out of synch Read explanation → EME DTC set upon SecOC EMS NOx ATO (downstream) is out of synch Read explanation → EMO DTC set upon SecOC EMS NOx ATO (downstream) is out of synch Read explanation →