Scania EMU DTC 8494 Coolant pump M523, supply voltage: Short circuit to battery

EMU EMU control unit · Scania

Code 8494 (decimal). Some diagnostic tools show it in hexadecimal as 00212E.

In short

The control unit indicates that the voltage is too high.

Applies to: EMU1 (ECS)

What does Scania EMU fault code 8494 mean?

What causes Scania DTC 8494?

How does the system react?

What are the symptoms?

How to fix Scania EMU fault code 8494?

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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.