Scania BMU DTC 544 Timeout in direct current converter E84 (DCC) CAN node

BMU Battery Management Unit · Scania · 2 variants

Code 544 (decimal). Some diagnostic tools show it in hexadecimal as 0220.

In short

Communication with the direct current converter interrupted.

Variant 1

Applies to: BMU6 (RES)BMU6 (RESXA)BMU6 (RESXB)BMU6 (RESXC)BMU6 (RESXD)BMU6 (RESXE)BMU6 (RESXF)BMU6 (RESXG)BMU6 (RESXH)BMU6 (RESXI)BMU6 (RESXJ)BMU6 (RESXK)

What does Scania BMU fault code 544 mean?

What causes Scania DTC 544?

How does the system react?

What are the symptoms?

How to fix Scania BMU fault code 544?

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Variant 2

Applies to: BMU5

This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.

Code 544 in other Scania systems

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