Scania EMU DTC 8478 Coolant pump M523, lower electric power consumption than expected.

EMU EMU control unit · Scania

Code 8478 (decimal). Some diagnostic tools show it in hexadecimal as 00211E.

In short

The coolant pump does not consume current as expected.

Applies to: EMU1 (ECS)

What does Scania EMU fault code 8478 mean?

What causes Scania DTC 8478?

How does the system react?

What are the symptoms?

How to fix Scania EMU fault code 8478?

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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.

Code 8478 in other Scania systems