Scania EMU DTC 8240 Electrical fault, coolant pump for electric machine M77, supply, short circuit to earth

EMU EMU control unit · Scania

Code 8240 (decimal). Some diagnostic tools show it in hexadecimal as 002030.

In short

The control unit gives an implausibly low voltage, which indicates a short circuit to earth.

Applies to: EMU1 (ECS)

What does Scania EMU fault code 8240 mean?

What causes Scania DTC 8240?

How does the system react?

What are the symptoms?

How to fix Scania EMU fault code 8240?

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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.