Scania EMD DTC 6557 Coolant pump M4005, blockage in cooling circuit

EMD EMD control unit · Scania

Code 6557 (decimal). Some diagnostic tools show it in hexadecimal as 199D.

In short

Higher power consumption than expected.

Applies to: EMD1

What does Scania EMD fault code 6557 mean?

What causes Scania DTC 6557?

How does the system react?

What are the symptoms?

How to fix Scania EMD fault code 6557?

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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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