Scania EMD DTC 6674 Heat exchanger, monitoring not working

EMD EMD control unit · Scania

Code 6674 (decimal). Some diagnostic tools show it in hexadecimal as 1A12.

In short

Heat exchanger monitoring is not carried out.

Applies to: EMD1

What does Scania EMD fault code 6674 mean?

What causes Scania DTC 6674?

How does the system react?

What are the symptoms?

How to fix Scania EMD fault code 6674?

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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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