Scania BMU DTC 664 There are issues with the propulsion battery hardware or a high temperature

BMU Battery Management Unit · Scania · 2 variants

Code 664 (decimal). Some diagnostic tools show it in hexadecimal as 0298.

In short

One or more cell monitoring circuit boards on a battery module have hardware issues or problems with high temperatures.

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 664 mean?

What causes Scania DTC 664?

How does the system react?

What are the symptoms?

How to fix Scania BMU fault code 664?

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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 664 in other Scania systems

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