Scania EMU DTC 18307 Coolant pump M86, supply signal, short circuit to battery or open circuit

EMU EMU control unit · Scania

Code 18307 (decimal). Some diagnostic tools show it in hexadecimal as 004783.

In short

The control unit reports that the supply signal voltage is too high.

Applies to: EMU1 (ECS)

What does Scania EMU fault code 18307 mean?

What causes Scania DTC 18307?

How does the system react?

What are the symptoms?

How to fix Scania EMU fault code 18307?

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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.