Scania EMU DTC 170257 Refrigerant compressor E157, overheating above warning level

EMU EMU control unit · Scania

Code 170257 (decimal). Some diagnostic tools show it in hexadecimal as 029911.

In short

The control unit indicates overheating above the first warning level.

Applies to: EMU1 (ECS)

What does Scania EMU fault code 170257 mean?

What causes Scania DTC 170257?

How does the system react?

What are the symptoms?

How to fix Scania EMU fault code 170257?

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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.