Scania CMS DTC 549 Communication error, DDU or ICL

CMS CMS control unit · Scania

Code 549 (decimal). Some diagnostic tools show it in hexadecimal as 0225.

In short

CAN communication with the instrument cluster or DDU control unit is broken.

Applies to: CMS1 (CMS)

What does Scania CMS fault code 549 mean?

What causes Scania DTC 549?

How does the system react?

How to fix Scania CMS fault code 549?

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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.

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