Scania EMU DTC 20591 Contactor unit R126, negative contactor, service life reached

EMU EMU control unit · Scania

Code 20591 (decimal). Some diagnostic tools show it in hexadecimal as 00506F.

In short

The service life counter for the contactor has reached its maximum level.

Applies to: EMU1 (ECS)

What does Scania EMU fault code 20591 mean?

What causes Scania DTC 20591?

How does the system react?

What are the symptoms?

How to fix Scania EMU fault code 20591?

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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.