Scania EMU DTC 9057 Water valve V521, supply signal, short circuit to earth

EMU EMU control unit · Scania

Code 9057 (decimal). Some diagnostic tools show it in hexadecimal as 002361.

In short

The ECU control unit provides unreasonably low voltage.

Applies to: EMU1 (ECS)

What does Scania EMU fault code 9057 mean?

What causes Scania DTC 9057?

How does the system react?

What are the symptoms?

How to fix Scania EMU fault code 9057?

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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.