BMU 1056 Scania No voltage class B from the on-board charger

BMU Battery Management Unit · Scania

Code 1056 (decimal). Some diagnostic tools show it in hexadecimal as 0420.

In short

The voltage from the on-board charger is low compared to the voltage reported by BMU.

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 1056 mean?

What causes Scania DTC 1056?

How does the system react?

What are the symptoms?

How to fix Scania BMU fault code 1056?

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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.

Code 1056 in other Scania systems

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