Scania EMU DTC 4247 Contactor unit R126, negative contactor, voltage class B to bodywork outside range

EMU EMU control unit · Scania

Code 4247 (decimal). Some diagnostic tools show it in hexadecimal as 001097.

In short

The UI sensor reports voltage outside the approved range.

Applies to: EMU1 (ECS)

What does Scania EMU fault code 4247 mean?

What causes Scania DTC 4247?

How does the system react?

What are the symptoms?

How to fix Scania EMU fault code 4247?

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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 4247 in other Scania systems