Scania BMU DTC 665 Fault in IBU sub system

BMU Battery Management Unit · Scania · 2 variants

Code 665 (decimal). Some diagnostic tools show it in hexadecimal as 0299.

In short

BMU sub system has a functional fault.

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 665 mean?

What causes Scania DTC 665?

How does the system react?

What are the symptoms?

How to fix Scania BMU fault code 665?

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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 665 in other Scania systems

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