Scania BMU DTC 4378 Battery module 10, electrical fault

BMU Battery Management Unit · Scania

Code 4378 (decimal). Some diagnostic tools show it in hexadecimal as 00111A.

In short

The cell monitoring circuit board has detected faults in the electrical cable that connects to the individual battery cells.

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 4378 mean?

What causes Scania DTC 4378?

How does the system react?

How to fix Scania BMU fault code 4378?

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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.

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