Scania EMU DTC 20817 Vehicle charging inlet box R130, UI sensor, internal fault

EMU EMU control unit · Scania

Code 20817 (decimal). Some diagnostic tools show it in hexadecimal as 005151.

In short

The UI sensor indicates a voltage on the vehicle side's positive contactor that is outside the permissible limit.

Applies to: EMU1 (ECS)

What does Scania EMU fault code 20817 mean?

What causes Scania DTC 20817?

How does the system react?

How to fix Scania EMU fault code 20817?

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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.