Scania EMU DTC 8243 Coolant pump (M77) not responding

EMU EMU control unit · Scania

Code 8243 (decimal). Some diagnostic tools show it in hexadecimal as 002033.

In short

The control unit requests a rotational speed greater than 0 but receivess no response from the coolant pump.

Applies to: EMU1 (ECS)

What does Scania EMU fault code 8243 mean?

What causes Scania DTC 8243?

How does the system react?

What are the symptoms?

How to fix Scania EMU fault code 8243?

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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.

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