Scania EMO DTC 6677 DTC set upon SecOC EMS NOx ATO (downstream) is out of synch

EMO EMO control unit · Scania

Code 6677 (decimal). Some diagnostic tools show it in hexadecimal as 1A15.

Applies to: EMO2 (EMS)

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This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.

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