Scania EMU DTC 20551 Vehicle charging inlet box R130, UI sensor, incorrect temperature measurement

EMU EMU control unit · Scania

Code 20551 (decimal). Some diagnostic tools show it in hexadecimal as 005047.

In short

The UI sensor has reported an internal fault to the control unit.

Applies to: EMU1 (ECS)

What does Scania EMU fault code 20551 mean?

What causes Scania DTC 20551?

How does the system react?

What are the symptoms?

How to fix Scania EMU fault code 20551?

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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.