Scania BMU DTC 827 Low class B voltage supply to the direct current converter (DCC)

BMU Battery Management Unit · Scania · 2 variants

Code 827 (decimal). Some diagnostic tools show it in hexadecimal as 033B.

In short

The direct current converter has sent a message to the BMU control unit indicating that the class B voltage is too low.

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 827 mean?

What causes Scania DTC 827?

How does the system react?

How to fix Scania BMU fault code 827?

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Variant 2: Open circuit on the heater circuit

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.

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