Scania BMU DTC 4393 Battery module 9, cell monitoring circuit board, minor internal fault

BMU Battery Management Unit · Scania

Code 4393 (decimal). Some diagnostic tools show it in hexadecimal as 001129.

In short

The cell monitoring circuit board has detected an internal error and is having trouble monitoring the status of the battery module.

Applies to: BMU7 (BMUA)BMU7 (BMUB)BMU7 (BMUC)BMU7 (BMUD)BMU7 (BMUE)BMU7 (BMUF)BMU7 (BMUG)BMU7 (BMUH)BMU7 (BMUI)BMU7 (BMUJ)BMU7 (BMUK)BMU7 (BMUL)BMU7 (BMUM)BMU7 (BMUN)BMU7 (BMUO)BMU7 (BMUP)

What does Scania BMU fault code 4393 mean?

What causes Scania DTC 4393?

How does the system react?

How to fix Scania BMU fault code 4393?

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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 4393 in other Scania systems